I don't know how important the video lag is on your TH, but it can be a game stop for some of us? I fly video platforms with three of my Drones and I also have a FPV racer. Any Any lag on my racer will result in a crash.
I guess the ST card could be a problem since the transfer rate would be slower.
Good info Pat also Merse if you will make sure that you have a U3 class 10. 16 or 32 gig SD card...
Thanks for this, I am testing with 16GB MSD now, I have been using 128GB so want to see if this is the cause!
Noted on the antenna position, I have been at 45 degrees so they vertical - is that what you mean?