I'm having trouble tuning a custom 3-inch build on Betaflight. I can't get general vibrations to go away. I'm using RC in Power 1506 4100KV motors on 4S. These are very notchy motors. I've been told notchy motors are difficult to tune. Are there any pointers out there for such a build with notchy motors?
I've tried several versions of Betaflight 3.5.7 through 4.1. I've turned down the filtering and the motors stay cool. I've tweaked the PIDs a lot and it hasn't helped much. I've even changed to a completely different Frame to get rid of any possible resonance. I've tried soft mounting the FC, and hard mount. TIA