In my opinion, the engine does not stop. It's nothing but play in the gearbox. To check this, just remove the cover from the transmission and you will find that the motor rotates all the time.
I also thought so that there may be slops in the gears. It's just hard to confirm with my TRX4 because the pinion is not visible from the outside. Overall it's a a great motor. It's the same as their original version of Fusion.
I was about to say the same thing that you did what he is seeing is play in the gears I have two hobbywing ax systems and I just recently bought a hobbywing fusion Pro that I'm getting ready to do a video on
Others RU-vidrs put that motor to the test, pulling 10 pounds the motor don't overheat, some people consider the motor don't have the punch because of the low kv, crawling is that using the low kv to have torque
Very low low crawling but how much wheelspeed ,punch is also possibel with the same gearing? Would be nice to show how low and how fast is it possibel with the same gearing.