Does your Internet still work?

Then yeah it’s fine lmao

Sounds like a corrupted windows install or you’ve got a bitcoin miner maliciously on your PC.

Either way, back up your data, format drive, reinstall windows.

If you want higher FPS:

Lower your resolution

Lower your graphic settings

Upgrade your GPU

Get more RAM

Modern CPU’s are designed to thermal throttle at 100 degrees C. 60-65 is completely safe.