Hi, My P4 Advanced is showing "weak transmission signal" and then intermittent " aircraft disconnected" signals when only a short distance away. This happens where ever I fly. I notice that the signal quality on most channels spike at"poor". I have the latest firmware installed and the latest version of DJI Go4. Three times last night the done initiated a RTH because signal was lost. The flying conditions were perfect and I was in the middle of a field. Lost confidence in this done. My previous P4P was always rock solid. Can anyone help please?