The real aircraft buffets and provides excellent feedback on AOA and energy state. The sim doesn't "shake" or "vibrate" artificially, it buffets exactly as the aircraft did. It is a 6.5 G airframe, learn to manage it. You should be doing this in every DCS aircraft.
Oh, and READ the handling tips paper in the sticky, it will help you understand complex aerodynamic phenomena. In months of testing, I have yet to pull the freaking wings off.