Bugs with Ahri, Blitz and Kayle

Hello...lately there is a lot of bugs in the game...last week my friend died while playing Kayle while he was under her ulti...then few days ago in ARAM I knocked up Fizz (while playing Blitz) while he was still in the air from his E spell that should make him untargetable and lastly, the bug with Ahri that happens in every game with her is that when you charm someone, that person is charmed in the opposite direction and actually runs away instead of walking towards Ahri and sometimes it happens that the person just stands in the place, not doing anything.

p.s. - while I am already writing this, I would like to ask what is going on with the FPS since the new client was released, I usually had like 300 FPS when the game started and then in lane it was 150+ and now since the new client it is around 80-90 in lane and goes down to 60 in team fights...ty :)