GPU clock going grey/blank/stop reading

I have to say that I switch from rtx 3070 to rtx 3080 and now this happaning, dosent happaned with the 3070.

I restore settings as default in HWINFO just in case
GPU is a Asus TUF 3080 OC

This thing is that what I can see it is on idle, sometimes this GPU clock its going grey, and when its grey it will not reading. Not always doing it, I have to wait sometimes few seconds/minutes or closing anything in my destokp to make it going grey, otherwise looks like if GPU is working just a bit, will not doing it.

*I just tested watching a youtube video, clock will stay at 210.0 MHz but will not flashing on gray, it remain on black, as soon I close the video, after few seconds will start going grey.