Since I have updated my IPad Mini 4 to 11.2.0 and updated to the latest DJI Go App I receive a video transmission signal weak on my 3rd battery after flying the first two without any warnings. It gets so bad that I can barely control the gimbal. I tried switching between 2.4 and 5.8 and that makes no difference. I tried Litchi and it seems to work ok. The temps outside were in the low 70's and my IPad wasn't even warm. I had in the past gotten video gliches but not this bad and not with a red warning at the top of my screen. Oh I might add that the UAV is only 20 ft away from me. I am going to call DJI support but I wanted to see if other pilots had experienced this issue.