Optimum Vesc settings?

I scanned all of this and am trying to diagnose my own problem…

I currently have brakes at lower speed, but not at high speed. My understanding is that my battery regen needs to be higher??

My motors are set to 30A max output and -30A regen with -4A per motor currently… (Its an AWD hub motor build with a 10s5p 30q battery.)