Interesting work you continue to do. Looks like you are returning to the idea of corrupted data on your computer vs. something on the network causing the hang? I to tried the repair but not the reset. I assume you started a ticket and presented some of your ideas and have not gotten a reply yet?
SU 12 is still a few weeks away and of course may not solve this issue. Our problem does not seem wide spread at all. I’m trying to decide on my next step which might be wiping all flight sim related apps off my PC. Reinstall, with a clean registry this time, MSFS 2020 and leave it in it’s most vanilla state and see if I can get that to run. I’d like to know the difference from running custom flights and the canned discovery flights as far as the app mechanics are concerned, cause therein lies the issue or at least a major clue.
I can’t see this as being a hardware issue either. I guess after all that , if I still have no joy, I’ll post a ticket. I hope you get yours running right soon, deserve it after all the time you have put in.