Around 0:40 the switch in GPU usage occurs in the video.
My GPU usage is around 40% on Valorant then after 2 minutes of smooth gameplay with a normal GPU usage it drops to around 5-20% GPU usage which makes the FPS go from 300+ (high GPU usage) to 1-30 FPS (low GPU usage).
It happens on most games like COD: Cold War where the GPU usage goes from 70% to 1-15% GPU usage, making the frames go from 250+ to 1-20 FPS.
If I swap my 3090 for a 1080 it works wonders and stays at a normal GPU usage. Then when i switch back the 3090 the GPU usage will stay high and playable in games until I restart the computer.
GPU: MSI Gaming X Trio 3090
CPU: i7 10700k (5.1 ghz overclock)
Motherboard: Asus Strix z490-a
RAM: 2x8gb (16gb) Trident Z neo RGB