I fly the 320 series IRL, and I find Aerosofts FDE to feel pretty realistic with regards to hand flying. The sidestick is very sensitive, and often times we simply fly with our fingertips using the slightest inputs to make small corrections on final on a smooth day. There how however have been days where it is very windy, and I have found the limits of the side stick stop in Flare law to keep the wings level. Not a comfortable feeling. When new guys fly the Bus and are constantly making changes to the pitch and roll by moving the stick around too much, we call it "churning butter." It tends to make passengers nauseous! If you are overcontrolling the aircraft in the sim, release the stick for a second, and you need to focus on small inputs, focus on applying pressure to the joystick rather than movements. Your joystick could also be set at too high of a sensitivity.