Digital Art Community Forum for Artists & Creators

Username: cheriekitten
Post Date: 2026-05-11 06:18:14

1000 x 2000 at 300 dpi is fine but anything larger seems to significantly lag brushes in specific i was using custom oil brushes at 640 size increasing spacing still results in lag cpu usage is only at 30% with this lag and 1 layer ram usage is 19% i7 8700k 64 gbs ram as for performance capped at 120 fps enable v sync off enable viewport optimization is off i had restarted rebelle and the pc issue persists

Username: JennaStark
Post Date: 2026-05-11 13:00:16

Ugh, that's frustrating. (Nothing more disruptive to a painting session than brush lag!) I'm on Mac (M1) and don't experience these issues -- I regularly use the bristle brushes (pretty much my only tool these days) on canvases with edges 6,000px or larger (at 300dpi), with brushes at a much bigger size than what you're citing. I've got 64GB in RAM, too, but I think your graphics card may be even more powerful than mine is, which should only help your issue, I'd think. I'm not sure about frame rate on my computer, but I generally have Rebelle open alongside Photoshop, my email, Spotify, and sometimes YouTube (or playing movies from our own server) without issue. Do you find what you have open in tandem affects Rebelle's performance at all? Did you have this issue in previous iterations of Rebelle 8 when using the bristle brushes? Unsure if this could be related to a Mac vs. PC coding thing with how things play out on the backend of the program and process info -- perhaps other PC people will jump in and we can compare systems to try and help pinpoint the problem?

Username: Veronika Escape Motions
Post Date: 2026-05-11 14:29:02

Hi [USER=100138]@cheriekitten[/USER] , Does it lag with the default brushes or your custom ones? If the default brushes work OK, please send us some of the most laggy custom brush presets, we will look into them.

Username: Joanna Hill
Post Date: 2026-05-11 16:47:41

Also experiencing lag. Especially with using the selection tool to resize.

Username: cheriekitten
Post Date: 2026-05-11 19:11:33

[QUOTE="Veronika Escape Motions, post: 32624, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , Does it lag with the default brushes or your custom ones? If the default brushes work OK, please send us some of the most laggy custom brush presets, we will look into them. [/QUOTE] hi [USER=6]@Veronika Escape Motions[/USER] , yes its lagging with the default brushes as well as my custom brushes. i was seeing some people having issues based on the nvidia driver they had. this is the one im on. i have not updated to the newest one. [ATTACH type="full"]3023[/ATTACH] i also got rebelle to crash the other day. hopefully that sent over properly ❤️ i also agree with joanna that there is lag with the selection tool but does the edit box sensitivity control that ? i havent tested that yet. since jenna mentioned not having issues on an M1 mac, my Master let me borrow his to test if it was having the issues there. the specs are m1 macbook air 16 gb ram mac os tahoe 26.4.1 gpu m1 7 core metal 4 --- all tests are using oils and acrylics round hard brush size 40 --- for this first test performance is set as capped to 120 fps vsync off viewport optimization is on --- brush is lagging 1000 x 2000 at 200 dpi 126% cpu usage 28% gpu usage 2.59 gb ram usage ---- brush is lagging 4000 x 6000 at 200 dpi upon file new artifacts appear and canvas is diagonal can go over the artifacts with a mouse and they disappear canvas is still diagonal 175% cpu usage 17.9% gpu usage 10.39 gb ram usage --- turned viewport optimization off --- less lag compared to before 1000 x 2000 at 200 dpi 124.4 % cpu usage 40% gpu usage 1.68 gb ram usage --- lag is present 4000 x 6000 at 200 dpi 126.5 % cpu usage 65.1 % gpu usage 6.77 gb ram usage the type of lag we are seeing is rubber banding style, takes minutes to catch up with the cursor. took a picture of the file appearing with artificing present from the viewport optimization being on did it old school with a phone because its a pain to get it off the mac lol [ATTACH type="full"]3022[/ATTACH]

Username: simonstrum
Post Date: 2026-05-13 01:13:29

In my experience lag is very dependent on bristle density, both Thick and Thin. Both set around 40 there's no lag for me on 7k x 4k canvases and 1000px brush size. Increase densities to 90 and it takes 20 seconds to move a couple of inches.

Username: cheriekitten
Post Date: 2026-05-13 01:56:32

[QUOTE="simonstrum, post: 32640, member: 146809"] In my experience lag is very dependent on bristle density, both Thick and Thin. Both set around 40 there's no lag for me on 7k x 4k canvases and 1000px brush size. Increase densities to 90 and it takes 20 seconds to move a couple of inches. [/QUOTE] are you saying for bristle brushes? for me im using texture brushes

Username: ebenavente
Post Date: 2026-05-15 11:30:02

[QUOTE="Joanna Hill, post: 32628, member: 241233"] Also experiencing lag. Especially with using the selection tool to resize. [/QUOTE] I also always experience massive lag every time I use the resize tool or every time the file autosaves, like 3 full seconds or more; I do work on large canvases though (A3 size which is big but not that much I think?).

Username: Veronika Escape Motions
Post Date: 2026-05-18 13:03:14

Hi [USER=100138]@cheriekitten[/USER] , One issue could be the Nvidia driver, 595.97 had some issues. They released an update which fixed them. See this forum: [URL]https://www.escapemotions.com/community/forum/t/45258/rebelle-8-2-3-screen-distorted-and-flashing-on-startup/[/URL] Just out of curiosity, please try to update and let us know if the issue persists. Next step I'd suggest is to reset Rebelle to the default, so we see how it goes on the default installation. Just for reference, I am seeing no lag on my Mac mini M2 16GB RAM with this type of brush.

Username: cheriekitten
Post Date: 2026-05-18 13:06:15

[QUOTE="Veronika Escape Motions, post: 32750, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , One issue could be the Nvidia driver, 595.97 had some issues. They released an update which fixed them. See this forum: [URL]https://www.escapemotions.com/community/forum/t/45258/rebelle-8-2-3-screen-distorted-and-flashing-on-startup/[/URL] Just out of curiosity, please try to update and let us know if the issue persists. Next step I'd suggest is to reset Rebelle to the default, so we see how it goes on the default installation. Just for reference, I am seeing no lag on my Mac mini M2 16GB RAM with this type of brush. [/QUOTE] sure thing, do you want me to test 8.2.3 or 8.2.4 ? ❤️

Username: Veronika Escape Motions
Post Date: 2026-05-18 13:30:30

Since 8.2.4 has the Wintab issue (oh lord ?), better test in Rebelle 8.2.3. Thanks!

Username: cheriekitten
Post Date: 2026-05-19 19:13:16

[QUOTE="Veronika Escape Motions, post: 32753, member: 6"] Since 8.2.4 has the Wintab issue (oh lord ?), better test in Rebelle 8.2.3. Thanks! [/QUOTE] so i did a clean install of 8.2.3 updated nvidia to the latest version. i actually got it to crash live when i was testing. i hope that sent over okay. i was recording each brush as one continuous stroke to see how long it took to catch up. does this look like lag to you or is this expected behavior? this is what caused the crash. once i switched from the bristle brushes to the liner brush it crashed. [URL='https://youtu.be/5ThU4_lw-Yo'][MEDIA=youtube]5ThU4_lw-Yo[/MEDIA][/URL]

Username: Veronika Escape Motions
Post Date: 2026-05-22 14:24:26

Hi [USER=100138]@cheriekitten[/USER] , On a similar CPU (8 years old), we see the same behavior. Such a delay is expected when painting a continuous stroke. You can try to turn off RealShader / SoftShadows to see whether it is improved, but from your video, we do not see any unexpected issue.

Username: cheriekitten
Post Date: 2026-05-22 14:33:56

[QUOTE="Veronika Escape Motions, post: 32813, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , On a similar CPU (8 years old), we see the same behavior. Such a delay is expected when painting a continuous stroke. You can try to turn off RealShader / SoftShadows to see whether it is improved, but from your video, we do not see any unexpected issue. [/QUOTE] are you guys seeing a huge improvement in delay on newer cpus? if possible do you know which cpus are performing best ? id love to update my build to a rebelle focused system but not sure which cpus are doing best. i forget that my cpu is 9 years old sometimes ?

Username: Veronika Escape Motions
Post Date: 2026-05-25 11:53:14

Hi [USER=100138]@cheriekitten[/USER] , New i5/i7/i9 or Ryzen 5/7/9 would be great. However, I believe they won't work in your original PC.

Username: cheriekitten
Post Date: 2026-05-26 02:18:41

[QUOTE="Veronika Escape Motions, post: 32834, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , New i5/i7/i9 or Ryzen 5/7/9 would be great. However, I believe they won't work in your original PC. [/QUOTE] oh no it would definitely be a brand new build ❤️

Username: waterhorse
Post Date: 2026-05-29 12:21:02

I'm having lag also ...a small circle comes up when the pencil touches the screen.

Username: cheriekitten
Post Date: 2026-05-30 07:24:19

[QUOTE="waterhorse, post: 32893, member: 9786"] I'm having lag also ...a small circle comes up when the pencil touches the screen. [/QUOTE] a small circle? did you mean this ? [ATTACH type="full"]3072[/ATTACH] like the cursor ?

Username: waterhorse
Post Date: 2026-05-31 16:38:19

[QUOTE="cheriekitten, post: 32899, member: 100138"] a small circle? did you mean this ? [ATTACH type="full" alt="Screenshot 2026-05-30 012349.png"]3072[/ATTACH] like the cursor ? [/QUOTE] yes....when putting pressure on the pen...this little circle comes up.

Username: cheriekitten
Post Date: 2026-05-31 17:45:56

[QUOTE="waterhorse, post: 32909, member: 9786"] yes....when putting pressure on the pen...this little circle comes up. [/QUOTE] the cursor coming up doesnt indicate lag. you can enable or disable the cursor in preferences. its just the area on the screen where your brush is. aside from the cursor appearing are you having any other lag issues ?

Username: Veronika Escape Motions
Post Date: 2026-06-01 11:42:01

Hello [USER=9786]@waterhorse[/USER] , I am not sure if you're referring to a white circle around the brush, that is not our cursor, but Windows'. You can disable this option in Windows: "Enable press and hold to perform a right-click equivalent." ...to get rid of that white circle. [ATTACH type="full"]3077[/ATTACH]

Username: waterhorse
Post Date: 2026-06-06 19:14:48

Thank you Veronica ! I'am having trouble whit my ( I think Wacom) because in every pencil there is lag when the brush touches the screen ( pencil creating little strokes beside the normale pencil line very odd). I already wrote to Wacom because the Wacom QHD 27 seems there are no longer updates. Could that beiing the case ? No answere from Wacom...about the above.

Username: Veronika Escape Motions
Post Date: 2026-06-08 13:26:12

Hi [USER=9786]@waterhorse[/USER] , Please send us a screenshot of this. If you could also record a video, that'd be great!

Username: waterhorse
Post Date: 2026-06-08 13:38:15

Hi Veronica, found it ! It was Wacom ! Due to Wacom 27QHD I installed the latest ( [B]and last [/B]) driver update from last year, because Wacom no longer updates the ''[B]older[/B]'' machines.. (.?? very annoying). The driver update did the trick...Rebelle is working fine now...?

Username: Veronika Escape Motions
Post Date: 2026-06-08 14:07:50

[QUOTE="waterhorse, post: 32989, member: 9786"] Hi Veronica, found it ! It was Wacom ! Due to Wacom 27QHD I installed the latest ( [B]and last [/B]) driver update from last year, because Wacom no longer updates the ''[B]older[/B]'' machines.. (.?? very annoying). The driver update did the trick...Rebelle is working fine now...? [/QUOTE] I am happy to hear that! ?

Username: cheriekitten
Post Date: 2026-06-29 21:50:21

[QUOTE="Veronika Escape Motions, post: 32834, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , New i5/i7/i9 or Ryzen 5/7/9 would be great. However, I believe they won't work in your original PC. [/QUOTE] i had my friend/mod test on his ryzen 9 7900k and he still is getting lag on 8.2.5. so much so he could change the color mid stroke within the lag. and weirdly the ethernet spiked with rebelle as well. [MEDIA=youtube]VW6gmBWdcFo[/MEDIA]

Username: cheriekitten
Post Date: 2026-07-10 04:24:23

[QUOTE="cheriekitten, post: 33490, member: 100138"] i had my friend/mod test on his ryzen 9 7900k and he still is getting lag on 8.2.5. so much so he could change the color mid stroke within the lag. and weirdly the ethernet spiked with rebelle as well. [MEDIA=youtube]VW6gmBWdcFo[/MEDIA] [/QUOTE] [USER=6]@Veronika Escape Motions[/USER] did you get a chance to see this yet? it appears even on a ryzen 9 rebelle is lagging

Username: Veronika Escape Motions
Post Date: 2026-07-14 12:17:46

Hi [USER=100138]@cheriekitten[/USER] , I discussed with Pavol - the lag on the video seems reasonable, oils are the slowest of all tools, using a texture brush might be slower than using bristle brushes, larger brush size is a factor too, plus painting on a zoomed out canvas using long continuous strokes will lag as you try to cover larger areas. I'd suggest trying out this type of CPU yourself during actual painting; you should feel a difference compared to your current CPU.

Username: Carlos Caicedo
Post Date: 2026-07-23 22:32:45

I see a lag in the brush painting at the first use typically but on subsequent strokes is fine. The stroke path is cashed so that when it renders the paint shape is correct. I have seen this on the M4 mac and also on the windows (10) computer.

Username: cheriekitten
Post Date: 2026-07-24 10:53:32

[QUOTE="Veronika Escape Motions, post: 33690, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , I discussed with Pavol - the lag on the video seems reasonable, oils are the slowest of all tools, using a texture brush might be slower than using bristle brushes, larger brush size is a factor too, plus painting on a zoomed out canvas using long continuous strokes will lag as you try to cover larger areas. I'd suggest trying out this type of CPU yourself during actual painting; you should feel a difference compared to your current CPU. [/QUOTE] awesome : D ill be upgrading my pc over the weekend so im excited to see the improvements!

Username: cheriekitten
Post Date: 2026-07-24 10:58:01

[QUOTE="Carlos Caicedo, post: 33757, member: 88071"] I see a lag in the brush painting at the first use typically but on subsequent strokes is fine. The stroke path is cashed so that when it renders the paint shape is correct. I have seen this on the M4 mac and also on the windows (10) computer. [/QUOTE] thats interesting you see it on both, would you mind taking a video of it sometime to demonstrate? id love to see what youre seeing on the m4 mac in particular. ?

Username: cheriekitten
Post Date: 2026-07-27 11:32:40

[QUOTE="Veronika Escape Motions, post: 33690, member: 6"] Hi [USER=100138]@cheriekitten[/USER] , I discussed with Pavol - the lag on the video seems reasonable, oils are the slowest of all tools, using a texture brush might be slower than using bristle brushes, larger brush size is a factor too, plus painting on a zoomed out canvas using long continuous strokes will lag as you try to cover larger areas. I'd suggest trying out this type of CPU yourself during actual painting; you should feel a difference compared to your current CPU. [/QUOTE] the upgrade is complete! mobo - msi pro b760-p wifi ddr 4 ( newer model made this year, newest bios, voltage issue fixed ) cpu - i7 14700kf ( im aware of the 14th gen issue but its since been fixed by the bios updates. i still watch the voltage in case but nothing weird so far) gpu - msi 3080 12gb 64 gb ddr4 ram 3200 mhz cooler - be quiet elite psu - corsair rm1000x its working a lot faster now! im able to use much much bigger brushes even at huge canvas sizes. very odd because my last build would not use the gpu really and put it all on the cpu with this new build the cpu is barely utilized at 5-6% while the gpu uses 22-30% 6k by 4k canvas for each. im wondering something, even though i had the cpu graphics disabled on the last build i wonder if because it had integrated graphics perhaps rebelle was somehow getting confused and put it on the cpu graphics and not the actual gpu? which may be why the cpu usage was high compared to the gpu. because this build has no integrated graphics and its falling more on the gpu as it should. this is what i would expect but i couldnt get it to on the last build no matter what i did. this is really fun though being able to use much larger brushes, if i find weird stuff ill report it. ?

Username: Pavol Escape Motions
Post Date: 2026-07-27 12:17:02

Good to hear that the upgrade has helped! [QUOTE="cheriekitten, post: 33796, member: 100138"] im wondering something, even though i had the cpu graphics disabled on the last build i wonder if because it had integrated graphics perhaps rebelle was somehow getting confused and put it on the cpu graphics and not the actual gpu? which may be why the cpu usage was high compared to the gpu. because this build has no integrated graphics and its falling more on the gpu as it should. this is what i would expect but i couldnt get it to on the last build no matter what i did. [/QUOTE] Integrated GPU utilization shouldn't be bundled together with the CPU. Also since you've seen some dedicated GPU usage I'd assume that windows has correctly decided that Rebelle should use the dedicated one instead of integrated. Every frame has to be first computed on the CPU before its result is handed over to the GPU, so with better CPU you will see higher GPU utilization as it is now processing more frames. This is most likely what you see on your new machine. As a sidenote, you can force windows to launch Rebelle using a specific GPU (or other programs for that matter) via Settings > System > Display > Graphics, finding Rebelle in the list and changing its preferences. Second sidenote, DDR5 would also be a nice upgrade as some parts of our code benefit from faster memory but with the current prices its rough...

Username: cheriekitten
Post Date: 2026-07-27 13:00:41

[QUOTE="Pavol Escape Motions, post: 33798, member: 2990"] Good to hear that the upgrade has helped! Integrated GPU utilization shouldn't be bundled together with the CPU. Also since you've seen some dedicated GPU usage I'd assume that windows has correctly decided that Rebelle should use the dedicated one instead of integrated. Every frame has to be first computed on the CPU before its result is handed over to the GPU, so with better CPU you will see higher GPU utilization as it is now processing more frames. This is most likely what you see on your new machine. As a sidenote, you can force windows to launch Rebelle using a specific GPU (or other programs for that matter) via Settings > System > Display > Graphics, finding Rebelle in the list and changing its preferences. Second sidenote, DDR5 would also be a nice upgrade as some parts of our code benefit from faster memory but with the current prices its rough... [/QUOTE] thank you ? yeah i just figured id suggest it in case it ever comes up. it shouldnt i agree but idk what was going on so just throwing it out there. just an old cpu i guess. yeah thats a lot better, i had actually tried that method to launch it before, also tried messing with gpu scheduling, different nvidia drivers, etc, all sorts of stuff. it was definitely an old cpu though and just couldnt keep up. itll rest now in it's little box. id love a gpu upgrade as well at some point but i really really dont want ai on it if i can help it. oh man, yeah those prices are insane! i kept my old ram and just upgraded where i could so i didnt have to pay so much. but so far its working well for me. in the future, should ram come down in price i would do a much better upgrade! but for now this is working very well, im happy : )