I'm not sure about LINUX but it help for my case at least in flight mode i don't have any lags at all and cpu is not overloaded. Mayby ther are still some loops witch force linux version to recalculate it over and over again its make all times when you write program. That the guys from kerbal make game not mean they don't make mistake and sometimes its realy hard to find where this dot need to be or not.