I recently switched to win 11 and I must say that the whole system, but especially the MC30, has improved.
However, it should be considered that the htpc is configured only to work with JRiver so the programs and services are reduced to the essentials.
I have one annoyance that I can't fix: Microsoft Teams!
I have disabled the chat icon, uninstalled the app, cleared the registry and restarted but despite doing this several times, every now and then I get an annoying pop-up inviting me to reinstall the app. Luckily it doesn't appear while watching a movie, but it's a very annoying thing