Same issue here! Upgraded to a new Air Book earlier this year, running SIB Ultimate and within 5 minutes of working on a score the VDL sounds will cut out and I'll get the 'Low Memory - switch to a different Playback Configuration' page popping up. I'll reload a different playback config - then the whole cycle starts all over again. Seems to happen a lot after I Export an Audio file, but more or less randomly cutting out.
The new M1 Macbook seems to be having a lot of problem recently, from its screens that are so sensitive that a slight press on it, it will never work. Do you still recommend buying this?