I have this exact problem as well.
Proton experimental
GTX 2070 Super NVIDIA Drivier 510.60.02
Steam package 1653101165 API v020, Stable
NixOS 21.11.337357.dff5496b128 (Porcupine)
I too have this issue
Proton 7.0-6
512GB Steam deck
Steam package 1679113038 api v020, steam deck stable
SteamOS 3.4.6
Having the same problem on every version of Proton I've tried
NVIDIA GeForce GTX 1070 Ti
Steam package 1679680416 APIv020, no beta and up to date
Arch Linux 6.2.9-zen1-1-zen
I've made a video where I reproduced this issue from the start and included timestamps describing the video in the description: https://www.youtube.com/watch?v=mMb-3q4hPSQ
My system info gist: https://gist.github.com/mascherone108/229a438b60e4b410dcdb39a104e78499
To add to this: It seems to be only related to mouse movement and the overlay. I suspected mouse polling rate, but changing it from 1000Hz to 500Hz did nothing (changed it using /sys/module/usbhid/parameters/mousepoll, but I am not sure whether it actually worked or not).
Also, it has been happening on both X and Wayland, on AMD and NVIDIA (haven't tried Intel iGPU), different kinds of games, versions of Steam and drivers, etc.
Side note: Can I ask any moderators to remove the overlay label from FO:NV that was added because of my report? I thought it happened only in FO:NV but that is no longer the case. The link to my report is here: https://github.com/ValveSoftware/Proton/issues/356#issuecomment-850809077
A guide to reproduce the issue quickly:
You might be wondering why would anyone use the overlay like this? The answer is you don't even need to open it rapidly because it can happen even in long game sessions where you might only use the overlay every few minutes.
Why only games running through Proton?
Some things to note:
Is this related? The steam overlay seems to be very laggy for me
Still an issue with Steam version 1718305227. The more I open and close overlay the worse it gets to the point of game becoming unplayable.
NVIDIA RTX 2060 driver 550.90.07
Linux Mint 21.1
Still an issue with Steam version 1726683985
NVIDIA RTX 2070 driver 550.120
Linux Mint 22 Cinnamon
Sill an issue for me aswell
Steam Version: 1731433018
NVIDIA RTX 3080 Driver Version: 565.57.01
OS: EndeavourOS x86_64
DE: KDE Plasma 6.2.4
WM: KWin (Wayland)
One year later, still an issue on some proton games
Steam Version: 1766451605
Nvidia RTX 4070, driver 590 (open)
OS: Arch x86-64
WM/DE: Hyprland
one year later still same issue........ allthough tbf I had same issue on windows 11, not as bad as Linux though.
Steam Vesrion:1782257239
Asrock Steel Legend 7800xt
OS: Arch Linux
WM: KWin
proton 7.0-6x1 2023-03proton experimentalx2 2022-05
Your system information
Build date: May 14, 2022
API: v020
Please describe your issue in as much detail as possible:
Opening Steam overlay and then closing it rapidly can cause intense stutters and fps drops, and this only happens if you move the mouse around after closing the overlay; if there's no movement from the mouse, the fps remains the same.
This is a strange issue I've been having on both Xorg and Wayland/Xwayland, and to me, it seems to occur especially if you open the overlay while a game is loading. It's not tied with the game itself and likely an overlay or Proton issue since I haven't reproduced this issue on Linux Native games yet.
This issue happened recently in Barotrauma, running on Proton Experimental.
Steps for reproducing this issue:
I'll try reproducing it with a video proof if needed.