Assuming turn size 1. Longer turn size just delays orders and helps prevent stops.

Latency frames 	5
Stop frames 	10

Frame 0: Issue attack order
Frame 5: Receive attack order
Frame 6: Execute attack order
Frame 11: Issue move order
Frame 15: Last stopped frame.
Frame 16: Receive move order. If we started moving now we would get stuck.
Frame 17: Start moving


Latency frames 	5
Stop frames 	2

Frame 0: Issue attack order
Frame 3; Issue move order
Frame 5: Receive attack order
Frame 6: Execute attack order
Frame 7: Last stopped frame
Frame 8: Receive move order. If we started moving now we would get stuck.
Frame 9: Start moving


Conclusion:
If you issue an attack order on frame N,
The next safe time to issue a move order to the unit is 1 + Max(Latency frames, stop frames)