After you find the PC CPU usage is normal, it almost sure the PC is not affected by Virus!
And the SSD seems not too bad although the benchmark is low (normal NVME able to reach at least score 5000 or above, this is a little bit strange!
As you haven't mention your display card, thought that you are using the IGD of 8700K, go to Intel to have the driver update and see what happens...
If nothing attempt after you make the update, the last thing should be re-install W10, it's boring |