Long story short : disable your page file just for trials.
Notice : even when disabled it will be there for a smaller portion but that is normal behavior and okay for this test.
Same problems here with that message! Indeed when you switched PA off this message disappears and music start with stuttering for the first seconds. I never hear that stuttering before at the start of a track.
Changing Q1, Q1x, SFS, Buffer,... its very difficult to find a right setting to keep PA on.
Your suggestion to disabling the page file is a solution for this time problem? In version 09z-8-1e i have sometimes a start problem but after a second start it plays.
Johan