@han310 Could you try out to set the Max Performance Mode. Maybe that mode is doing some more in the background than just rising the GPU clock.
sudo DISPLAY=:0 nvidia-settings -a “[gpu:0]/GpuPowerMizerMode=1”
Following modes are availabel:
GpuPowerMizerMode=2 → Auto
GpuPowerMizerMode=1 → Prefer Maximum Performance
GpuPowerMizerMode=0 → Adaptive
Default mode is Auto.
Would be nice if you can give feedback if that worked for you.
And again just for insurance: You didn’t reboot your system somehow after you did set the clock frequencies?