Stanto

With MechJeb, since the early versions, it stutters my game even if I do not have the autopilot engaged. I don't know why, it especially does this when the height of my rocket hits about 6100km. The game just freezes and wakes up every few seconds. It's horrid.

Are you perhaps going to throw the code up on github.com or similar ? The wiki page there could then be updated with setting up the dev' environment.