I agree about CF being the polling problem when it's playing music, in a nav route, showing my full display of gauges (CANBUS controller) and using the brain plugin.

I'm switching over to 12V power supply for peace of mind anyway.

If the response seems too slow I can shorten my timer (100ms) and bump the priority (normal) of the thread. I will first wait until I've experienced it for a few weeks as most of the time I'm not pushing the steering wheel buttons all that regularly.