Problem CPU

Hi guys,
I'm trying to get rFactor2 to work smoothly, but I'm encountering severe stuttering. GPU performance appears to be fine, but the CPU bar (purple bar) looks maxed out.
My specs:
i5-7400 @ 3.00 GHz
GTX 1070 8GB
16GB Ram

 

What are you making? A car, a track, a Hud, plugin ..?

 

when I go into a server to run ... with any mod

 

Ah! I understand.
This is the modding forum.
There will be more people to help you in the Technical & Support - Support Questions forum