You can change the mouse and sword sensitivity separately in the settings, I deliberately adjusted the default to a standard 1000 DPI mouse, but I usually play on x3.5 for both lol.
I don't think I understand your suggestion, you can drag the sword around the ring if you hold RMB, do you mean that?
Also there is an onboarding on level 2, did it not load? There is a cube in front of you with explanation text right in the center and you can't pass this level until you align the angle with RMB, or did you just rely on LMB chaining mechanic to clear it?