I purchased two p3s just before Christmas. After we learned how to fly we gave both a range test individually. We got between 1500' and 1700', not bad given our suburban location. Since then 700' is the max if we're lucky. The RC and FPV signals both go from full strength to zero, not a gradual signal loss, it's either full or nothing. We tried from the exact location, flying the same route and we also moved to a more remote location and had the same results. Firmware seems to be the logical culprit, anyone else have this issue?