So I noticed this the other day after finally building a large ship big enough to hold a small fighter I made. The ship seems to jerk backwards bit by bit, not crazily, but also when turning, it does the same in the direction I turn for a brief moment. I have tested it in atmosphere, in gravity, and out in space with and without pistons. I have no rotors and there's enough gyroscopes to make it turn fine, though I prefer a slower turning for big ships. Either way, it is not a mod problem as there are no modded parts on the ship. Any help? No clue what could be happening other than the game just doesn't like large ships. I can provide video if necessary