I recreated my Prefetch folder and layout.ini file (did do 3 reboots and opened the programs I use regularly, etc. to get them in to prefetch) now my scanned total has increased by about 50, not decreased as it now scans the .pf files as they are accessed. There are currently 5+ .pf files and layout.ini in the prefetch folder.
No noticeable difference on boot times, but my system has many default processes that aren't required disabled. However, haven't timed or run bootvis to see for certain if the boot times are improved.