Hi Kent,

just some feed back, from testing over a couple of weeks - the problem still exists. I've tried to test in various ways, both with a freshly rebooted machine, where all browsers and similar doesn't open any old windows or tabs. Even on a clean boot, the problem exists, hence it is not consistant, which freaks me out, because I would very much like to isolate the problem.

I must say, that it never occurred before upgrading to High Sierra, so for some reason, there must be ways in the Mac OSX, where the way either resources are handled or the way programs are executed has changed. Are you sure, that you at PG Music understand sufficiently the difference High Sierra made to especially older Mac Books?

Are you in any way utilizing the GPU/CPU differently on the MacBook, because I have noticed that the fan has a tendency to go wild, when using BIAB and far more than what I experience when "beefing Logic Pro X" to the max. But if you want to retrieve any log files - please let me know......right now my main suspect is High Sierra has introduced changes, that has a negative impact on the performance of my MacBook, when it runs BIAB or iZotope plugins (not at the same time).

Brgds
Peter

MacMini M1 - BIAB2021 - Logic Pro X - iZotope Music Production Suite - Scaler 2 - far too many Waves plugins and Line 6 Guitars and boards + a fantastic Yamaha THR10ll mini Amp - Avid MBOX Studio

Peters' Garage is available on all major streaming services