To me the best path forward would be immediately update to the latest across the board. That means use sudo dnf upgrade --refresh and accept a full upgrade including kernel.
At the same time ensure your nvidia drivers are installed from the rpmfusion repo since many see problems when they select a different source for installing the nvidia drivers.
Once that is done let us know the results.
I had a couple of apps that had the flickering within the app until I did the following.
- create or verify you have a file
/etc/environmentand put this into its content.
QT_QPA_PLATFORMTHEME="wayland;xcb"
GBM_BACKEND=nvidia-drm
__GLX_VENDOR_LIBRARY_NAME=nvidia
ENABLE_VKBASALT=1
LIBVA_DRIVER_NAME=nvidia
WLR_NO_HARDWARE_CURSORS=1
- reboot and use the latest installed kernel then log in with wayland.
- Test and see if flickering still occurs.
When I created/edited that file on both my laptop and desktop it stopped the flickering that previously occurred within the few apps that were affected. I have since switched from X11 to wayland exclusively. The only app that I have not tested with that change is steam.