At first I thought it was the PS4 pad too (still kinda do, actually). Anyway, I've learned how to solve this by playing the guitar, where if you're facing a challenging guitar lick/arpeggio or whatever, and it's coming off sloppy, you break it down into pieces, try to isolate the problem, work on that and eventually it'll come together. That's sort of what I've been doing, as doing stuff like cross over teleports with Kung Lao or jump kicks into teleport was annoying. So for example, for a cross over teleport, you need to actively think about pressing up+forward (for the cross over) and then, instead of sliding your fingers, separately press down + up.