protonscr

Frame Generation makes the game stutter while showing 60fps on Mangohud with Cyberpunk and Witcher 3

protonclosed
ValveSoftware/Proton#8918 · opened 2025-07-20 by ShepardCommander100 · updated 2025-07-20 · 1 comments · github
SShepardCommander100 2025-07-20 github

Compatibility Report

  • Name of the game with compatibility issues: Witcher 3 and Cyberpunk 2077
  • Steam AppID of the game: 292030 and 1091500

System Information

  • GPU: RTX 4060 Mobile
  • Video driver version: nvidia-open-dkms 575.64.03
  • Kernel version:6.15.7-arch1-1
  • Link to full system information report as Gist:
  • Proton version: Proton 10, Proton Experimental, Proton GE 10-8 and GE 10-10

I confirm:

  • [ ] that I haven't found an existing compatibility report for this game.
  • [ ] that I have checked whether there are updates for my system available.

Symptoms

My game keeps stuttering when I turn on frame generation

Reproduction

For Cyberpunk, it happens randomly when I load a save, sometimes it happens in one load, other times it happens after 4-5 reloads.
But for Witcher 3, this happens constantly

Kkisak-valve maintainer 2025-07-20 github

Hello @ShepardCommander100, performance issues need to be evaluated on a per-game basis and we're using one issue report per unofficially supported game title. Since you've indicated the quirk is more easy to reproduce with The Witcher 3, I've transferred this issue report to https://github.com/ValveSoftware/Proton/issues/607#issuecomment-3094489132.

Feel free to also add a note to #4450 if it makes sense.

Proton versions

Upstream links