Hello,
I have 3 built drones with Caddx Vista digital system which have problem with very short video tx range.

All the drones works fine, but with each of them I have this problem so I think it's my DJI Goggles (V2) having an issue.

I tried almost everything, I have 50Mbps hack and 1200Mw one, but as soon as I turn a corner with some trees or a wall in the middle I almost lost the video tx, also if I'm at few meters (less than 100m), if I remember well this won't happen months ago.

I tried to switch antennas on Caddx Vista but the problem persists.

I tried to fly at 25Mbps but it's even worst.

I tried to fly with original Goggles antennas (I have the iFlight Crystal patch) but it still the same.

Of course I don't have issue with low power mode, the drones arm correctly and I can see the "unlocked" message and everything in the Goggles, so I'm sure soldering and configuration are good for every drone (one is a pre-built Nazgul 5 and one is a Cinelog 25).

I think it remains only to send the Goggles to DJI for an investigation, but may be you have some ideas where to look at? (BTW I would avoid to completely disassemble the Goggles by myself)

Do you know anyone else with a pair of DJI FPV goggles that you could borrow to test with your Vistas with? That would then allow you confirm or eliminate your goggles as being the cause of the issue.

Maybe the nuts on the connector for the antennas on ur goggles get lose and u cant screw them full on now

If the issue is the same across THREE vista, you can reasonably except its not them.

I fly behind trees, BIG dense mature sometimes wet RF sapping trees, and do so with std antenna on 200mW, 25mS, and on Channel 2.

Go back to basics, check matching firmware, fit the std antenna, check EVERY parameter on the Goggles, check mechanical contacts.