Black Pearl flickering - advice & help needed

[Dazzys]

Hi All,

Here is a link to a short video on the flickering I'm getting on a new FPV setup. The kit I have is:

Phantom 1 with the upgrade kit PCB installed
Fatshark 5G8 video TX - 250mw
Black Pearl FPV monitor
GoPro Hero 3 cam
H3-2D gimbal

Dropbox - Phantom 1 FPV problem.MOV

If anyone can help with what's causing the flickering it would be really appreciated. I could understand it if the drone was some distance away but not 10 feet!

Cheers
Daz