I've been testing a new part for long distance travel based on the Eagleworks' EM drive;
And although I'm accelerating at maximum throttle, KSP seems to regard the acceleration as "insignificant", and allows both timewarp and switching vessels and to the Space centre. I was optimistic and even used the highest possible values from EW's peer reviewed paper, and I've double checked that my orbit is changing, but KSP still disregards my acceleration.
Accurate translation of the RF Resonant Cavity device has
maxThrust = 0.000000029
What could possibly go wrong???
PS: No, I don't need a solution.