Hi everyone.
I am building a custom hexacopter, and I am using lightbridge for video transmitting.
Configuration is : Graupner MZ-18, Wookong M, GH4 camera, Lightbridge.

The hexa is super stable when used without lightbridge, with just my MZ-18 controller and GR24 receiver.
But when I replace the GR24 with Lightbridge (using trainer port connection from Tx to LB), I have a very weird "stuttering" problem.
It is hard to explain...
When the aircraft is on the ground, and I start the motors, still on the ground the aircraft makes a smooth sound, but every X seconds it stutters, like bzzzzzzzzzzz-Z-zzzzzzzzzz.
I even tried getting it in the air, and it clearly has like little thrills while flying too. Very scary.

I also realised, when I start the motors, and the "thrills" are there, IF I disconnect the trainer cable from the radio, the problem disappears.
So my guess was a faulty trainer signal on the radio, but looking in the assistant software of the Wookong, all controls are stable, no twitching or stuttering of any sorts on the sticks or switches signal.

Has anyone experiences someting like this ?
Does anyone have an idea of what this is ?
Any advice ?

Thanks guys !

did you connect the FC to assistant to check every channel works ok?