Tip number one; set the thrusters to acceleration not physics. In acceleration mode the thrusters create 1:1 acceleration of a theoretical Newtonian force by excluding the F and M in the F=MA calculation and provides the acceleration only. In physics mode it’s not a theoretical force and UE4 tries to calculate it as a real force in realtime with A=F/M. Thus the thrusters run proportionally to the framerate so the faster the framerate the faster the ship will accelerate creating an insanely annoying inconsistent maximum velocity.