I once had a bike that did something very similar. Every time I turned left, I fell off the bike. I turned out the brake cable was in an unusual position so when I turned left, the front brakes were applied.
Sorry for being off topic
try zip-ties, they fix everything.
ON-TOPIC EDIT: I think the cRIO actually power cycles in voltage protection mode so I would look for signs of the cRIO rebooting. (Flashing lights, erratic starting-stopping of the motors, etc.) Also, If any thing, I think you would be drawing too much current which should trip the breakers in the PD board; the PD board limits the voltage already. Are the transmissions lubricated sufficiently? Are the wheels too soft? Remember, the CIMs can only output so much power, to get more torque you could try a different gear ratio or you could run the jaguars (assuming you are using them) in torque (current) control mode.