Doesn't happen here but, of course, if you said which airplane you are using, it might be possible to say more, since some airplanes have custom ground handling running that should ideally be turned off by the airplane if GSX is pushing (developers can detected that), because if two addons are trying to set the airplane position at the same time, it would cause stuttering.
Another possible reason is not running with a locked frame rate, because this cause an increase of traffic on Simconnect, since it's not possible to set a fixed datarate, so we are forced to update every frame so, the higher your original (not doubled by frame generation or other tricks) fps is, the higher strain you put on the sim.