Hello Pete_auau and Heico H, thank you very much for taking your time for me! I tend to agree with Heico H that it is a GSX problem.
First, you just "decided" to agree with Heico, instead of agreeing to Pete_auau, who said the sensible things which is: if this was REALLY a GSX problem, it would have be known, and we would have the forum flooded with reports of it by now. When in fact, the reality is that everybody uses GSX + Fenix with no issues whatsoever.
The ONLY problem we are aware of is that, when using GSX + Fenix + FSRealistic together, the "ambient wind" function in FS Realistic caused brakes overheating after GSX Pushback, and this is always fixed by disabling that feature from FS Realistic. That's the only issue we know of and, of course, it was reported by many users, and so was the solution. Nobody ever reported something like you have.
If you want some extra evidence about this, I suggest checking this very popular channel:
https://www.youtube.com/@CptCanadaHe flies with GSX almost every day, and most of the time it's with the Fenix. And it's not the only channel that flies regularly with GSX and the Fenix, I'm sure you'll find plenty of them. Do you think they'd risk screwing up their flights in public, if GSX really caused problems to the Fenix ?
And lastly, your completely unfunded and unwarranted comments about the supposed "lack of support" by FSDT. This is so wrong on so many aspects that I don't even know where to begin. Maybe checking my post count, which runs at more than 48K posts ? So much for the "lack of support".
Now, I'll explain why I might have delayed replies a bit during these week and, it's because after more then 2 years working full time on GSX, I decided to take a week of vacation, which means I'm replying to post whenever I can, from my hotel room.