[Fixed] Paint Brush Stroke Lag/Delay

[Carlosan]

Could you please share if on both installation VS value is activated or not ?

[DiJa]

Hello Carlosan, here is my settings, it's off

[Carlosan]

Sorry, I don't understand, is it off in both versions 2024.13 & 2023.16 ?

Thanks

[IHearNoise]

I have it off in both versions and in 2024.13 it doesn't make a difference if it's on or off.

[Kostiantyn]

I have the same issue. When I'm drawing without releasing the pen, my FPS drop from around 400 to 25-40 (this is what 3DCoat shows in the bottom left corner). The version I'm using is 2024.17 and I have quite a powerful laptop with Intel Core i9 and GeForce RTX 4070.

 

The last version on which I didn't have this issue was 2023.23. It seems something changed in 2023.24, my guess is this:

 

Quote

3DCoat-2023-24

Tue Jul 18 15:24:51 2023

- Fixed the painting artifacts in per-pixel painting [at least, after fix we can't reproduce it]. They was appearing sometimes after DEL or Undo.

 

Also, after some testing I figured that the issue happens only on low poly models with big faces. For example if I create the default cube in the modeling room that has 24 faces, then I don't have the issue. But if I reduce the number of faces from 24 to 6, the FPS drops while painting.

So as a workaround, I would suggest downgrading to 2023.23 or to divide big faces on the mesh into smaller ones.

[Kostiantyn]

The issue seems to be fixed in latest releases!

[IHearNoise]

Yes, it seems to be fixed. Using 2024.20

[tiget]

where to 

Check for updates to 3D Coat and install any available patches or updates.

                                                                                                                                                                                                                                         mapquest directions                       

[Henry Townshend]

Still not solved for me, or back in 2025.10.

To repro:

* Import a single plane (mine is 4mx4m, imported from Blender)

* Paint

Observe as soon as Paint Brush being larger, the Painting experience is slow and lags.

Subdividing the plane helps, as suggested above. 

With any other model that is not a flat plane and has more faces, the problem is either way less apparent, or non existent, and feels workable again. E.g. when selecting any of the template models, like sphere, or Cube. However! Interestingly, with selecting "Tile" object, both of them, either Single Tile or Tiled Tile (bottom right after choosing "Paint UV Mapped Mesh", the problem exist the same way as with the imported plane.

It seems to me 3D Coat has trouble with painting on single flat planes. One could ask: "Why even use single flat planes" -> Reason: Working on Tilable Textures or Trim Sheets/Hybrid Atlases.

Edited August 28, 2025 by Henry Townshend
typo, clarify