Thanks so much for confirming it SHOULD work.
I have been trying without neofly since identifying the issue. I also removed all plugins, and re-installed MSFS in a new directory after doing my best to sweep the system for any lingering MSFS utilities, etc. I removed everything!
All my test flights have been with the DA62 - I will try with the NX cub and also do a little more troubleshooting this evening. Is there anything else to gather while I do so?
I saw instructions to get a crash log - I will try and follow those so I can follow up with the actual error if it throws one.
Thanks!