I perform and sell 2d and 3d mapping systems, and have used DJI GS Pro on the Phantom 4, I1 and
I2, but had a few issues with it, and Map Pilot was very reliable. We also use UGCS on PC which is ultra-reliable albeit an expensive ground station. We mainly use iPad Pro with the UAV's so that is quite reliable, we found with Go running in the background we had a high failure rate with loosing control with the
I2 which we couldn't pin point to interference (although our spectrum analyser showed nothing), application or firmware issues. On the Phantom 4 and I1 Pro Black Go worked flawlessly with Map Pilot, but has we have upgraded the kits they have become less reliable.