I've read in several places where adding FPV to a Q500+/ST10+ will cause very slow update times and can cause crashes. Don't need any more of those too badly. I still like the idea of using FPV, tho', and I get the impression the delay is caused by overloading the capacity of the electronics. OK, would it be possible to disconnect the screen in the controller and use "only" an FPV ?? The screen is small and my eyes are old - not a good combination when trying to figure out just what's going on out there.