When I play I sometimes lift my mouse a reposition it on the surface to fix my aim again or usually after I get killed. I also find that I can't do a complete 180 turn without lifting my mouse up. Is this something to fix? Should I adjust...

My friend who plays Skye plays with a low sensitivity so it's hard for her to clear angles fast with her ~~tasmanian tiger~~ dog. She wanted to suggest a different sensitivity for dogging, either have a settings for it or just make it high...