1. Wind varies too much and too often in one competition and even in one series. It can happen sometimes (lets say 1 in 10) but not in almost every competition, also wind changes from +3 to -3 are unacceptable.
2. There is too much time to show CPU players result. When there is 30 CPU players, one have to wait 30 seconds.
3. There is no source code of this game
of course 3 is not important to play, but maybe if an author of DSJ3 made the source open, somebody would fix these issues.