If you have a lightbridge DJI drone, flyaways are very rare, especially if you have a P4 or later with dual compass and dual IMU. If you have lost the video connection, and your craft goes into ATTI mode (because of loss of GPS or a magnetic anomaly to cause a compass error), and you have no VLOS, THATS NOT GOOD.....you are in trouble, especially if the wind is blowing the craft away from you. This is a good reason to try and fly upwind if you can, but I never plan my route based on wind. It's also a good reason to fly with VLOS, in case you do have one of these rare times where the craft goes into ATTI.
In 18mos of flying Lightbridge DJI drones, I've had two instance of my P3P craft going into ATTI. Once at the beach for a compass error, I don't know why. The second time is when I lost GPS when I was flying under a cement bridge (my oversight). Fortunately both times I had VLOS and easily flew the craft to land safely. My P4 has never gone into ATTI in the 9mos I've had it, not even a hint of GPS or compass issues.
In the past when DJI used WiFi for communications there were more frequent instances of flyaways. I'm not talking about drifting away with the wind in ATTI mode, I'm talking about literally flying away as if someone else was controlling it. The advent of Lightbridge, starting with Phantom 3 Advanced and Pro, this kind of flyaway virtually never happens anymore. This is one of the key reasons I'll never buy a drone that uses old school WiFi for communications, unless it's a $50 trainer for newbies.