I had turned the shot locating thing off and started my career 0-4 with like 2 winners per match and 20+ unforced errors. Turning that back on has helped a ton; I switched it back on when I was one game away from losing and ended up coming back to almost win that set before I finally lost.
I thought I'd be able to pick this game up pretty easily because Top Spin came so easily to me but this **** is hard.