Right off I see a couple questionable settings.
Absolute max is at 80a and should be 130 to 150
This from Vedder’s Webpage
“Absolute max” is checked in every PWM switching cycle and used in case the soft back-off strategy for the other limits doesn’t work. I usually set it way higher than the other limits because soft back-off is preferred rather than switching off the motor with a fault code, but it should never be higher than 150.
It appears that setting the absolute max too low will cause the vesc to shut down rather than initiate soft back off strategy.
I’m not sure if this will cause a shut down during braking but the setting should be corrected regardless.
I go down a steep hill that’s more like 100 ft or more riding brakes hard with a full battery and have watched my 10s voltage spike as high as 42.8 still nothing cuts out and no loss of brakes.
I am running dual 6355’s and vescs and have my Absolute max set at 140a on each vesc.
You also have multiple ESC over CAN checked and Enable Traction control.