I found no bugs to speak of. It's an awesome module. The included training and campaign are fun, as well as the machine itself. Simple, stupidly powerful and very Soviet. I loved every minute I spent in it so far.
Try going slow. Slower. Also use a lot of rudder in the turn out. It ain't easy but it can be done!
I think it took me three or four tries to get it right.
Our viper is not good at grovelling(flying slow and at very high AoA). That makes it lose to a well flown F-14 or Hornet in a 1v1 unless the pilot is smart enough to play to his own strength and not play the opponent's game.