I have a problem with the Ronin under operation with the thumb controller or remote controller. It takes a couple of seconds to move then it freezes then goes again. It is the same with both controllers in all axis. Balance is fine, motors are low stressed, seems OK under use but uncontrollable with the remotes. Any ideas or suggestions please?

I have a problem with the Ronin under operation with the thumb controller or remote controller. It takes a couple of seconds to move then it freezes then goes again. It is the same with both controllers in all axis. Balance is fine, motors are low stressed, seems OK under use but uncontrollable with the remotes. Any ideas or suggestions please?