Elevate the CPU Priority of the game process.
Increase FPS and Prevent stutters caused by other processes.
Kick other processes out. Skyrim/Fallout is the only one who should have the whole CPU.

• Skyrim LE/SE/VR/AE
• Enderal LE/SE/VR/AE
• Fallout NV/3/4/VR
• Oblivion

This mod uses High by default
You can change it in PriorityMod.toml

Run as Administrator is required for Realtime

https://docs.microsoft.com/en-us/windows/win32/procthread/scheduling-priorities#priority-class

You should almost never use Realtime, because this interrupts system threads that manage mouse input, keyboard input, and background disk flushing. This class can be appropriate for applications that "talk" directly to hardware or that perform brief tasks that should have limited interruptions.