protonscr

TEKKEN 8 - nvidia slow down

protonclosed appid 1778820
ValveSoftware/Proton#10019 · opened 2026-07-30 by msmalik681 · updated 2026-07-30 · 1 comments · github · game page · search this game
Mmsmalik681 2026-07-30 github

Compatibility Report

  • Name of the game with compatibility issues: TEKKEN 8
  • Steam AppID of the game: 1778820

System Information

I confirm:

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

Symptoms

The game slows down my nvidia gpu to 210mhz like a low power mode during gameplay for a short time causing slowdown. mangohud(or any overlay) will make this always happen on any unreal engine 5 game. this issue could be resolved when playing without mangohud but not anymore. I have tried multiple proton versions and multiple launch options as well as multiple graphics settings. lower graphics setting can make the slowdown less frequent and shorter but it still happens. this is a major issue for a competitive fighting game that should hold 60fps.

The unreal engine 5 game Unreal Physics(2837320) also slows down but only when you have a active overlay like mangohud.

Reproduction

  1. start the game.
  2. set graphics to high or ultra to make the drops happen more frequently.
  3. run practice mode and select panda and kuma with the stage as arena.
  4. when in game double tab down then hold to walk around the stage and the clocks will drop at some point or you can spam heat smash until it slows down.
  5. clocks can also drop in practice when you enter the menu by pressing start.
Image
Kkisak-valve maintainer 2026-07-30 github

Hello @msmalik681, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/7444#issuecomment-5131285676.

Upstream links