Games are unplayable suddenly on Nvidia GPU

Ask Fedora
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Hello everyone.

I am having unexplainable problems playing any game with my Nvidia GPU. It all started suddenly today that all games I tested except one or two run at 10-20 fps (some games then play in slow motion). This is true for native games and games played with DXVK, VKD3D and Vulkan directly.

Graphics Info:

Graphics:
  Device-1: NVIDIA AD104 [GeForce RTX 4070] driver: nvidia v: 570.133.07
  Display: wayland server: X.org v: 1.21.1.16 with: Xwayland v: 24.1.6
    compositor: kwin_wayland driver: X: loaded: modesetting,nvidia
    unloaded: nouveau dri: iris gpu: nvidia,nvidia-nvswitch resolution:
    1: 2560x1440~144Hz 2: 1920x1080~60Hz
  API: EGL v: 1.5 drivers: nvidia
    platforms: gbm,wayland,x11,surfaceless,device
  API: OpenGL v: 4.6.0 vendor: nvidia v: 570.133.07 renderer: NVIDIA
    GeForce RTX 4070/PCIe/SSE2
  API: Vulkan v: 1.4.304 drivers: N/A surfaces: xcb,xlib,wayland
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo de: kscreen-console,
    kscreen-doctor, xfce4-display-settings gpu: gputop, intel_gpu_top, lsgpu,
    nvidia-settings, nvidia-smi wl: wayland-info x11: xdriinfo, xdpyinfo,
    xprop, xrandr
  • Integrated graphics is disabled in UEFI
  • I am using the proprietary drivers from RPMFusion
  • I have installed all the latest Fedora package upgrades
  • Games are installed on NVME drives
  • GPU VRAM is not full, PCIe Gen is correct

I tested:

  • ReBAR on and off
  • Kernel 6.13.9 and 6.13.8
  • KDE Plasma on Wayland, Cinnamon on X11
  • running in flatpak
  • rebooting
  • maaany WINE/Proton versions

Nothing works. But everything works completely normal on Windows 11.

I would appreciate it so much if someone could help me debug and fix this. I don’t know where to look next.