GPU power higher when PresentMon in overlay mode

[teeace59]

Sorry for my english

I have an old PC with a 2080Ti
I have an issue with the power consumption of my GPU
It is difficult to explain so I will make an exemple:
I play a game on my second monitor or my third one (TV), without PresentMon, my GPU uses 80W
I activate PresentMon in overlay mode, my GPU now uses 140W !
I activate PresentMon in Windowed mode, my GPU uses 80W

So I use NVCleanstall to make a clean installation of my GPU driver
I don't reboot my PC when installation finished
Everything works fine, my GPU always uses 80W ;-)

I reboot my PC, and it is as before, 80W or 140W :-(

Any idea?