I can’t overclock my NVIDIA GPU using a command like this: nvidia-settings -a '[gpu:0]GPUMemoryTransferRateOffset[3]=2500'.
The same command works just fine on X11 session.
I switched back to x11. Nvidia UI needs the coolbit x11 flag to load the extension, which allows overclock. Wayland options are not available AFAIK.
Found a workaround - did not tested it, yet.
"You can work around this incredibly easily. Ctrl+Alt+F2, login, and launch a minimal X session using tinywm, twm, or some other incredibly lightweight window manager. Launch GWE and you can set your overclock, power limit, fan curves, etc. Then switch back to your Wayland session. It costs pretty much zero CPU, RAM, VRAM, or GPU usage. "