I got sick not a nice feeling, but I hope I get over it
The sick feeling can be caused by stutters if you have the graphics settings too high and/or super sampling too high.
To test for stutters, fly a F-18 at +500 knots down low over NYC/Manhattan - when you fly real close to the Empire State Building it should look perfectly smooth when it passes by. If it doesn't, then you need to lower your super-sampling and/or graphics settings.
I fly my Samsung Odyssey / 1080 combo with SS = 1.5 and Graphics at U, H, H, M, L, L and get zero stutters during high speed low flying and snap rolls.