Its because PC games arnt stable 30 fps.
When a pc runs 30fps avg it means there are small lag spikes where fps maybe drops down to 10-15 fps for abit and it because annouying and hurts gameplay.
The same isnt true of a console game thats locked to 30 fps, where the lowest the fps drops to is like 28-29 fps.
Its almost always running 30.







