I'm currently on this version too, can you share your efi?
I'm sorry. Didn't read this before. Attached see my latest EFI. The Bluetooth stack changed moving to monterey, this is added to the config and as well replaced the needed kext.
I'm now on OC 0.8.0 and Monterey. First boot was terribly slow, this had to do with bluetooth injection. The bluetooth stack in this OS version changed and needed to fix things, now again as fast boot times as under Big Sur.
Everything works for me as before (except for sleep, but that never did work correctly).