Aircraft stopping when taxiing, Throttle not responding until 50% travel achieved

#PC, Store Version, Since last update"The one with the Australia Update" I have noticed while taxiing that the aircraft slows and comes to a stop with just above idle power selected, to get moving again i have to add power and apply and then release the handbrake to start rolling, also my throttles ( Thrustmaster Warthog) only starts to add power when the throttles are at least half way through their forward travel, both issues are very frustrating, especially the stopping while taxiing, so far all prop aircraft have this braking issue. any help would be appreciated. thanks.

Moved to Bugs & Issues.