Quest Link completely broken; showstopper for development

Attempting to launch it, I either get a black screen and frozen head tracking or a complete slideshow and then freezing/crashing

That usually means the Encoding Bitrate is set too high. Have you tried reducing the Encoding Bitrate in the Link Dash or Oculus Debug Tool?

Yes, it s bad, really really bad. I'm using the same Unity version, latest NVidia update, everything updated, OpenXR as backend in Unity.

First of all, on meta horizon link app it says that my computer doesn't meet the minimum requirements, even though my laptop has the latest available hardware. But still, link works occasionally. On another computer, desktop this time, it doesn't work at all, doesn't launch.
For my students, for 6 out 10 doesn't work. This thing should work without spending hours finding a solution.

When it works, it works via cable. Air link is almost unusable, even using the best and most stable Internet. Air link works for approx. 10 minutes, then I relaunch it and so on. That feature for me maximum can be considered experimental.

I m wondering if there are developers who can actually use link for real production, many hours per day.