From these photos you are using a buwizz 3.0 (so it may be different) but I was using a 2.0 with the same idea with a buwizz motor plugged into the ir receiver and the truck it was powering didn’t even move. I tried it again whilst only using the buwizz (no pf receiver) at it moved quite quick.
so I think it might supply less power though I’m not sure how as from my understanding the receiver just takes the power from the source and then chooses when to send power through. I’m probably wrong though if that is how it works then the motors should have the same power?
This probably won’t help your problem but I thought it was worth saying.
