I don't think a fraction of a second interruption would be overly problematic. These drones are somewhat heavy and thus bring relevant amounts of momentum. But the start up process is probably far too long
Yes the reboot takes too long, even before you account the time to re-negotiate comms (even over fiber it is not instant). However in a terminal approach on target say a 1/4 second disrupt will likely be unrecoverable. Quadcopter drones are not ballistic or aerodynamic, and stability recovery once it gets tumbling is challenging.