nvidia-smi command so slow

I have few mining rigs to work. I had a problem at single rig there NVIDIA-settings command so slow.

The command under below,
sudo nvidia-settings -a “[gpu:0]/GPUGraphicsClockOffset[2]=100”
sudo nvidia-settings -a “[gpu:0]/GPUMemoryTransferRateOffset[2]=1800”

The response was
Attribute ‘GPUGraphicsClockOffset’ (um04:0[gpu:0]) assigned value 100.
Attribute ‘GPUMemoryTransferRateOffset’ (um04:0[gpu:0]) assigned value 1800.

I did after the command GPUPowerMizerMode=1, but it took 3min to finish. There has 13GPU on the same rig.

I hope you will be able to provide the information.

Driver Version: 390.25