Mamba max on 5s Lipo?

[VintageMA]

I run a 1512 on a stock MM on 5S with CCBEC and a fan. No extra caps. I don't have any heat problems.

Only issue I have is that my two MMs used to initialize a 5S pack right off the charger and now I have to run the voltage down from 21v to about 20.7v in order for the MM to work properly, otherwise it just runs the motor for a brief moment and then shuts down.