Hmmmmm :(
Took an age on a relatively modern Lenovo laptop which was already fully up to date with Windows Update and has 24G of memory and NVME. Not much change: nagged me to set up Windows services I'd already set up (This was using Windows Upgrade Assistant from Microsoft.com). Fully up to date so I can't whinge about driver issues now being because I'm using unsupported software but yes, meh, that's a couple of hours I won't get back.