[Mark McLeod]

Did you ever try running under the same no PC power conditions in the pit and at the practice field, too, before you started making power changes? It's always good to repeat all original conditions to try getting it to occur off the field.

A team I worked with stopped driving on one side while at competition.
We isolated it to their game controller.
But the same problem happened with their backup game controller, though.
It turned out to be both game controllers. A borrowed one from another team worked.

That particular Thrustmaster joystick also has presets and mapping buttons that might be half triggering from being jostled by robots hitting the player station wall.