It might also depend on where/what you're doing. The more detailed areas make the processor (and graphics card) work harder, so the fans rev up to compensate. When you shift to a less 'busy' area, it doesn't work as hard and winds down.
There are ways to configure the fan speeds depending; this is usually done in BIOS before you load your operating system. I won't give specifics because it hinges on your computer's physical fan designs, where the pc is located, if the room is cold, if the fans are clean (protip: dust regularly. Look into guides for the pointers if you're not sure) As a general rule, anything beyond 70 degrees celcius (60, depending on your view) is when the fans should absolutely be revving up hard. Beyond 80, the processor has a very real danger of being damaged and you should shut the computer down immediately. Most BIOS have a 'test and auto config' feature, and you can always discard changes before saving them.
Before you start messing around with fanspeeds though, try drivers and launching in directx as people have stated.
Last edited by Some_Twerp753; 19/04/21 10:44 PM.