Please see the last point of the match in this video:
I hit what I guess is a lob from the service line, which is a return of his lob, and it goes so high it is off the screen. Then, it lands between the service line and the return line, and of course S. Wawrkinka returns it. Now, I have seen very high lobs in real tennis (against me), and it is possible I suppose to do what is in the video. Maybe the animation is what is wrong, as normally to hit this type of lob a player would swing up in something of an underhand motion rather than a smash motion. If that is the issue, then I understand that you can't do much about that right now. But if this type of shot is a bug, then here is something that will let you see it.
By the way, if you'll watch the first game, this is the only way that I am able to win a game against this opponent in World Tour right now. It wasn't this bad before the last couple of updates. Now, with the changes, my serve in World Tour is totally different, and to get a serve in I pretty much have to use safe serve. Then, this S. Wawrinka is an animal and hits such brutal shots that I have resorted to volleying almost completely. Usually, though, it takes 5 - 6 volleys per point to get a point as despite my hitting very low, fast, and wide angled shots from the net to the corners, he is able to run to each one and return it pretty much. When I finally beat him (maybe in 20 - 30 more attempts), I will post the video and you can decide whether or not this is realistic . I am enjoying the challenge!