Just got through registering here on the forums for this reason alone... SAS is broken in .23, pure and simple. I've been building perfectly balanced aircraft, from VTOL's to high speed low atmo jets, from air ships to space worthy rocket planes and all the way up until .22 my aircraft that were tested and retested were ALWAYS stable from low speed to high speed... since about ver .16. Now, any of my craft get over roughly 175m/s and they're still nice and stable WITHOUT SAS on, but turn that baby on and all hell breaks loose. They start shuddering like they did (with SAS) back pre-.21 or .22, can't remember which. SAS will hold them steady thru take off, picking up speed, etc. But reach that roughly 175m/s mark, leave SAS on and they're uncontrollable, flipping out of control, nose diving, shaking themselves apart, etc. Turn SAS off and they're flying smooth as silk like they used to but it's difficult to fly aircraft without the assistance of a properly operating SAS system... it just is. This happens on ALL my aircraft, none are exempt.
