So Im quitting ultimate and want to dedicate more time to other smash games (Ive never played any others for more than 2 hours) I was wondering if adjusting my deadzone and radius would help with shorthops and tilts. would appreciate any help.

EDIT I use the Gamesir g4 as my controller but its practically a Xbox 1/360 controller for what its worth)

Its hard to say, most controllers will work fine with the default settings, but the best thing to do is mess around with different deadzones until you find what you're comfortable with.