Unfortunately, it's true, there is yet another way to exploit gameplay physics in topspin 4. But have no fear, I've come up with a way to counter.
When someone does body serves especially at the beginning of the match, if you just try to time the ball out in front of you, your player will actually stick in place and not respond to you attempting to move for around a second. It wouldn't be so bad if it were just that one shot. But that sticking effect can last for a few shots giving them an artificial advantage. But even worse it can effect your next return when they serve a wide serve, your player can/will stick (even with perfect timing) for a second after your shot not allowing you to cover the open court.
The way to counter this is, when you are body served you have to do your best to move your player so the ball is on your side and not in front of you. And try to release the button so the ball would be even with your body when you make contact. So when body served the steps are:
1. Move your player to the side as much as possible
2. Release the button, but not too early, try to get the player to make contact with the ball when it is parallel to your body
3. Now aim where you want to hit
Doing this right makes your player responsive after you hit the ball. You won't get any speed boost but your player will be available to move right after you hit the ball instead of sticking for a second. This neutralizes the serve and stick trick and both players have responsive movement.
Your player can be stuck when someone hits groundstrokes up the middle over and over again as well. But you do the same thing, try to move your body out of the way and try to time the ball so your racket makes contact with the ball when it is parallel to your body. When they decided to hit somewhere other than the middle your player will have responsive movement.