I started noticing this on my third mission to my Mun orbital base; as soon as the vessel got a stable orbit around Kerbin, I could see the Ap and Pe slowly moving, and my orbital velocity decaying at a rate of about 1-2 m/s^2 when at 0 throttle and above 70Km. When I engage time warp though, the orbit becomes stable and the Ap and Pe points do not move, but as soon as x1 time is engaged, they start decaying again.
Worst is, I endured this conditions to travel to the Mun, synchronize my orbit and rendezvous with the base. The constant "acceleration" made it impossible to dock with my base, that otherwise had a stable orbit.
I have launched several times, from different save points, removing clipping parts and new parts added to the rocket since it last worked properly; but it still happens and I'm at the end of my wits.
The game becomes unplayable under this conditions; have any of you experienced this? Is there a fix?
Thank you!
