It is not the loading that is the issue it is having to look in two places when you a looking for materials, that said it is not much of an issue a couple of minutes a month with Netherworks program sorts it.  I have more a problem with stripping out the readme or read me or read mes files and all other combinations of naming used.  I strip it out of the runtime and stick it in one big folder called content documentation.

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.