I didn't have any plugins enabled. Just the MS Wavetable for MIDI cuz this was just sort of a test song file I had BiaB generate.
When I was talking to the PGM tech yesterday, the Task Manager was one thing we spent some time on. It was spiking all over the place when it was distorting really badly. But after I reinstalled BiaB, I booted the Task Manager and had a look. Completely different. There were small tremors in that top line, but that was about it.
As for my mention of rice krispies, they were quite minor and I've found in general that, once BiaB has had a chance to run a while, things will settle down.
I don't have Bluetooth or wifi on this machine. I can disconnect the Network adapter easily enough, but I'll bet that isn't the problem. Because, once again, I didn't used to have this problem prior to 2019. So I dunno why the network adapter should suddenly cause problems.