Hello everyone!
I have this build and yesterday updated succesfully to Monterey 12.3 from Big Sur.
Previously updated OpenCore to 0.79 and the latest Lilu/Whatever/Alc/etc and did a full mirror backup to a second NVME using CCC "legacy bootable copy", which was something i didn't tested yet and i can confirm works perfectly replicating the os/data/recovery structure on the main drive: the only thing to care about is copying your actual EFI to the mirrored disk EFI if you want a completely independent boot drive.
Everything went smooth at first glance, but boot time exploded considerably, from < 30sec to few minutes.
After a bit of inspection with verbose mode, i tracked it down to Monterey performing a series of trim on the NVMEs during boot which repeteadly ends into timeouts and presents itself on the next boot.
To restore the original boot speed i followed the advice on dortania Opencore manual
"On macOS 12+, it is no longer possible to specify trim timeout for APFS filesystems. However, it can be disabled by setting 0."
So changing this value to 0 restored the normal boot speed but i'm wondering at which cost ?
If i check into system report i still see both disks reporting "TRIM Support: Yes", but afaik trim does get performed during boot from osx, so in the end i suspect the disk is not being trimmed at all.
Any suggestions / feedbacks ??
Thanks in advance