You are 100%$ correct 4rotors, the XM+ is a decent RX for what it is. I recently dusted off my all my FPV gear and have been using only XM+'s but as stated, they have a decent but limited range. Today I was flying at a huge field near a bunch of transformers and as soon as I got up in the air my VTX just went haywire so I put it in stability and tried to LOS it but it cut out about 2-300 yards away from me, never found it. But when I fly it in my yard I can go easily over a quarter mile vertical, never fail safed doing that

And thank you guys for helping with the images, it makes a lot of sense now. Much thanks.

Flying near power generation and distribution areas is not wise, nor big radio towers if you fly Crossfire or anything else that uses that part of the spectrum. It's usually the video that goes down or gets bad, it's unusual to lose the link. But if it does happen, the best thing you can do is throttle punch and get as much height as quickly as possible. Get some distance from the EMI. If you are lucky you will retain video, but also run higher video output, so 300-400mW to offset the interference you get from a substation. Or don't fly near sources of high EMI.

The "old" FrSky ACCST protocols aren't resilient to external interference so you need to be careful where you fly with it. The LoRa protocol used by TBS Crossfire, ImmersionRC Ghost, and ExpressLRS are generally much more resilient and reliable because it makes use use of dynamic frequency hopping so it can avoid remaining on any frequencies where there might be a high level of interference.

Being un unencrypted one-way transmission system, analog video is always going to suffer in such scenarios. HDZero would probably have similar issues, but the encrypted bi-directional digital systems (DJI and Walksnail) should be able to cope quite a bit better.