Sometimes the GPU might enter “power saving mode”. If that’s the case, you can follow these steps to force “performance mode”:
set “High performance” plan in Windows control panel
set “Prefer maximum performance” in NVIDIA control panel
Download nvidia inspector version 3.5. here:
https://drive.google.com/uc?export=download&id=1Dny2QYUB5wLrHPStwg4_WzpHCUs5xN15
Change the following settings and apply changes:
restart your PC
review the current state using this command: nvidia-smi -q -d PERFORMANCE