I'm just trying the PM6+ beta for the first time. I'm importing about 100k Nikon NEF files into a new catalog that I've named 'Raw Files'.
It took about 3 hours to get as far as finishing the "catalog metadata gathering' stage which seems reasonable. But then, as it was going through the 'catalog image preview generation', it slowed to 0.1/sec which was >4 days (screenshot attached). Later it slowed to 0 and offered a hopeful 10+ days. I quit and restarted, then repeated the scan to catalog operation and it seemed to complete OK in about 30 minutes.
I now have a folder named 'Raw Files', just under 2 GB containing 6 files starting 'catalog.' and a folder named 'proxies' containing 2 'cache' files and 98 folders, each containing 1 medium size jpg. That seems odd for more than 100k files. What I don't have is a catalog! I can't find one and I can't see a menu item that leads to one.
Is what I now have what I should expect and where is the catalog?
Mac, 10.12.6, apps on a reasonable SSD, the image files are on a WD 3GB internal drive and the catalog on another similar internal drive. All have plenty of free space.
TIA
David