hi there
What plane do you use most? And what level of difficulty?
Yesterday i've been flying in i16 simulator mode and i found that compared to other plane i16 quite snappy and can bounce a lot if driven roughly. Try lowering the elevator settings or be more delicate when pulling stick.
Flyght physics in this game looks pretty good to me, but of course it isn't flawless. One of the thing i most miss is the weather related turbolence. Flying during a storm or a limpid day just affect the visibility... that's sad, but.. it's just a game