Thanks all for the feedback, great forum it seems looking around a bit.
It seems for whatever reason, the thumbnails are generated very slowly.
No virus scanner running, just the default Windows virus stuff and malware. Never seems to cause an issue elsewhere, but maybe?
I am not running the files off a network, all is coming from the computer. The extensions were enabled thanks.
Looking at the Task Manager, I don’t see anything unusual. I do see that it’s caching the previews to the C: drive which is going to take up a lot of space fast on C: Not such a fan of that as I want to keep C: lean and mean. Files live on E: only in this household
Interestingly enough, the first folder I exposed, my last set of pics, did show up as mentioned before with a big delay but when I navigate to other folders, the thumbnail previous do not change. I can highlight and expand a folder in the file browser to the lowest level, but the thumbnails stay the same. Very strange. I also don’t see any writing activity into the cache, so maybe it’s hanging up somewhere. Task manager shows a little bit of CPU use for RT. The RawPedia page is up again it seems so I’ll go poke around there.