John,
My guess is you have too narrow of a neutral band set for the throttle via your esc...
or check to re-bind to your esc....
or check that your throttle is not advanced via the radio... i believe mine is set to button A and I know mine gets bumped now and then. You should be able to see if your throttle is advanced on the home screen

My R works fine.... yes wish it had a few of the Pro features... but good for now