The only times i have issues with the Spektrum module in my M11 is when someone is using one of those garbage Chinese 2.4ghz radios..(FlySky /Eurgle etc..) I get throttle hits all the time.. Sounds like its cogging.. And an occasional steering hit where the car pipes itself.. Can be quite annoying.. I end up pulling the car off until they take theirs off the track.. Other than that I have had no real issues with the Spektrum module gear