I have to admit, I slightly struggle to see how playing a film is any different to backing up in terms of processing. There may be a buffer that VLC writes to a hard drive which Control:Mac doesn't?

Toggling the "Hard drive to sleep" option had made no difference.

Sooloos, Roon, G series (with LPS upgrade), 800 series (with LPS upgrade), HD621, AC200, Prime and PS, DSPs old and new.

Purdeys, Moke, Leica, 'Blad. Only the best.