Now, it's taking 15-20 secs to complete at least half the instructions I give it in '23
Could you confirm that have "speed up generation of RealTracks" checked in the RealTracks Preferences?
Also, I would suggest that you close BiaB, duplicate your Preferences folder to back it up (e.g. Preferences_saved), then delete all the files in your Preferences folder and see if the same problems remain. If not, please zip up your Preferences_saved folder and send it to us.
Sporadic dropping out of saved instruments when opening a file in '23.
Next time it happens, could you send us the file?
I'm not sure what is going on, but hopefully there is a clue there and we can get to the bottom of this. BiaB 2023 should be just as fast or faster than 2020-2022. Also the Activity Monitor (Applications - Utilities) on your Mac and see if you spot anything unusual there..