thank you for the kind reply.
"If you have installed the audiophile version correctly..." That's the $64,000 question!
In fact, in anticipation of the audiophile purchase, I bought a fresh new laptop last November and removed as much bloatware as possible, so that a fresh version of BinaBox could be installed.
My (then) new laptop was an HP Spectre X360 4K Ultra HD 15.6" touchscreen, with a core i7 8th CPU, 512GB solid state drive, 16GB RAM, Nvidia dedicated 2GB GDDR5 video, and Windows 10. At some point I plan to take advantage of the thunderbolt port for recording.
Typically I do select realtracks close to the tempo song (with some rare exceptions, with the few examples appearing to be bass instruments, not victims of artefacts, at least that my ear can hear).
I do have "speed up generation of real tracks" enabled. I will experiment and turn that off, but the specs of my machine should presumably be able to handle it. When I regenerate a song, the artefacts tend to go away on a new rendering, as they sometimes when I go up or down half a step.
I did a quick search in my bb directory and noticed that, under the realtracks directory, there are wma and BT1 files. There are absolutely no *.wav files anywhere on my computer (well, 3 or 4 songs ripped from a CD, but not in any bb directory).
I may owe someone $64,000. I don't think I did a full audiophile install. It was quite a process moving old files, getting the drivers to work etc., so I don't recall the install protocol I followed. I will dig out the shipped audiophile hard drive and compare the bb files there with those on my hard drive. I may have been reluctant to do a full install as my drive, although fast, is only 500GB new.
Thank you for your help!