I haven't tested the cl_interp changed yet but a friend has and has said it's made a massive difference!
We found that holding any sort of angle was almost impossible as your opponent could just swing the corner and you'd be dead before you even see them, meaning that pistol rounds were super T sided as just smashing into a site with the glock was easier than those crisp USP-S one taps you could get in CSGO. That and the MAC-10 was obscene, just sprint around like Call of Duty killing people
Got my rating in premier mode over the weekend, 6534. Seems rating is all over the place, but i'm happy with that as i'm never going to be any good at CS