Right: assuming there’s no issue with software and hardware, then in principle a machine should simply process as fast as it can. I should be seeing all my CPU’s maxing out in Task Manager. And as I mentioned I don’t.
So of course any processing demands from oversampling, or other calculation intensive processing would simply max out the CPUs. AFAIK, that’s what the number crunching is for. All my rendering is ITB; no external cards or VEP involved.
And I’m rendering a complex mix to a simple stereo track AND to SSD; so I don’t think that’s a problem since I can record lots of tracks on that drive without issues.
I tested the system with Intel’s Processor Diagnostic tool and Sandra and it passes with flying colors. And at 38 GB/sec, I don’t think the Memory subsystem is an issue. I haven’t completely ruled out hardware, but it’s very unlikely.
So what’s left is software: Windows 7-64? Nuendo? (in the Nuendo settings, Multi Processing is ON and Steinberg Audio Power Scheme is ON.) Some system-wide settings? A mystery…