one more problem:

"GPU under threshold found" what does it mean? how to solve this???
Also,
what is that warning:

it happens when powerlim goes down for the card.
Maybe, according to this happens "gpu under..." mistake?
GPU under threshold mean gpu is not fully utilize and usage is below 90%
happens when a gpu is not working at max capacity and have problems
Check nvidia-smi it will show that a gpu usage is bellow 90%