DLSS / FrameGen stops ingame causing FPS drop, stutter, lag - Arc Raiders

Graphics / Linux Linux
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Hi,

I am experiencing a weird bug with my current NVIDIA GeForce RTX 4070 SUPER 12GB running Arc Raiders. The game starts properly with DLSS and Frame Generation activated. Shortly after that it seems as if DLSS/FG stops: the FPS drop significantly and stutter as well as lag are setting in and are easily noticeable.

A bug report has been opened at Valve/Proton. A video demonstrating the failure is included and can be found here: ARC Raiders (1808500) · Issue #9164 · ValveSoftware/Proton · GitHub

A full feature proton.log with stack trace is attached to the GitHub bug report including full system specifications.

Brief specifications:

Arch Linux - 6.18.3-arch1-1

ASUS Dual GeForce RTX 4070 SUPER OC Edition 12GB

lib32-nvidia-utils 590.48.01-1

libvdpau 1.5-3

libxnvctrl 590.48.01-1

linux-firmware-nvidia 20251125-2

nvidia-open 590.48.01-4

nvidia-utils 590.48.01-1

I happily provide further logs or information required to debug this issue.

Any help on this matter is GREATLY appreciated.

nvidia-bug-report.log.gz (514.8 KB)

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Hi @mikamichi, thanks for the report! I’ve identified the root cause and posted my findings on this vkd3d-proton issue: ARC Raiders stuttering if Nvidia frame generation is available and turned off · Issue #2794 · HansKristian-Work/vkd3d-proton · GitHub

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Hi @wcampbell , that is fantastic news and I appreciate you looking into this. If I understand correctly the issue is within vkd3d-proton? Or how/ where will your mentioned fix be implemented? Is there something that I can be of help with?

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I’ve posted a vkd3d-proton MR that should fix this: Disable Reflex when a second swapchain is first used, rather than created by wcampbell-nv · Pull Request #2804 · HansKristian-Work/vkd3d-proton · GitHub

You’re welcome to help by testing the change and leaving a comment on the MR reporting your findings. You’d need to build vkd3d-proton with the fix and copy the .dlls over top of the ones under steam’s Proton - Experimental directory.