Reading through all the P8 gripes here is pretty depressing !
My PC is a fairly new chinese import but never gave too many problems with P7 and P8 seems to work without most of the other users non visible libraries and crashing problems. 
Only drama I'm experiencing has been related to accessing the P7 runtime pose libraries. Everything shows up okay but some poses and mat pose/textures will not physically apply to a figure in P8 ? 
Basically, I'm forced to work in P7 and render the pz3 in P8.
I gave up on loading older files into P8 due to the lack of support for viewing rsr thumbnails and only loading P8 with Daz characters (M3, V3, SP3, V4 etc) At this stage it can't replace my P7.
My hope now is that somebody can advise on where I'm going wrong.

For my 2 pence of input............ P8 libraries really need a "CLOSE ALL FOLDERS" button, this oversight is as annoying as the P7 libraries springing back to the top folder every time you closed one at the bottom of the library. And also why can't the libraries use the old rsr thumbs ? There are millions of older poser files out there in personal collections and even Rendo free stuff  that do not have png's.
Tommy.