Arma Reforger Heavy Foliage Artifacting

[kit-the-cat-skelanimal-plush]

In Arma Reforger rocks and foliage will completely glitch out when around 100% GPU usage. Does not happen on every instance of the game, I'd say it shows up about every 1 in 2, maybe 2 in 3 launches. The only thing that stops it is limiting the framerate, but that fails once the GPU usage increases to 100% during heavy gameplay moments.

https://youtu.be/RdhsNIctri8?si=8Zz4HWHwiVfpqL3Y

This is a video of it happening. The subtitles can be ignored, I wrongly attributed it to framerate rather than GPU usage.

Software information

Arma Reforger, happens on all settings configurations and game versions.

System information

• GPU: Nvidia RTX 3060 Ti
• Driver: Nvidia proprietary driver 545, also happens on previous driver versions.
• Wine version: Steam Proton Experimental bleeding edge, but happens on any Proton version that will launch the game.
• VKD3D-Proton version: 2.13, previous versions as well.

Log files

steam-1874880.log

[HansKristian-Work]

@runar-work reproduced it.

[runar-work]

I wasn't able to reproduce this with the 555 drivers on RTX 3070, so give that a try. 555.58.02 is the most recent I checked.

[kit-the-cat-skelanimal-plush]

Thanks, will try.

[kit-the-cat-skelanimal-plush]

Looks like the 555 driver works! Tested very extensively launching the game 15 or so times, worked perfectly. Still reproduces easily on 545, so it must be a bug that's been since patched. Anyways, thanks so much for the help! Should this be closed now since it appears to just be a driver issue?

Edit: Nevermind, I launched the game again and it is indeed still happening. Somehow wasn't happening for the first 15 times I launched the game :/

[runar-work]

Huh. Strangely enough I also reproduced again after roughly the same number of launches. Thanks for the feedback. I'll switch back to 545 and poke at this a bit more.

[kit-the-cat-skelanimal-plush]

Thanks a ton for the help!

[runar-work]

I found a compute shader that seems to do the ground work for the flower drawing, 3ca95f6902bd3478. It does have some barriers, but not in the biggest of the loops, so I added one there and could no longer reproduce the issue. Without the shader override the glitch always reproduces on the second launch after I delete the pipeline cache.

Here's the original dumped shader and the edited version: 3ca95f6902bd3478.zip

[kit-the-cat-skelanimal-plush]

How would I go about trying the edited version? Sorry I'm not very good with this kind of stuff :P

[runar-work]

Ah, sorry, I meant to tag Hans-Kristian on that comment. The goal, if it's possible, is to find some way to fix this in vkd3d-proton so you won't need to do any acrobatics. So far the easy workarounds involve reducing performance in some way, like adding VKD3D_SWAPCHAIN_LATENCY_FRAMES=1 to launch options, which obviously isn't ideal.

[adolfintel]

Is this an UE5 game? I noticed the same issue in Talos Principle 2, on AMD, in a couple of spots in the west 2 and west 3 areas when looking at the grass from certain angles or when zooming in, I thought it was a game bug but it looks the same as this.

example.mp4

[kit-the-cat-skelanimal-plush]

@adolfintel It runs on a proprietary engine made by the devs called Enfusion. That is a very similar looking bug, although in Arma Reforger it doesn't seem have to do with the angle you view the grass from.