I tried SR4 then went back to SR3 because it took forever to launch and relaunch Poser, unlike SR3 which loaded much faster than SR4 (about a minute and a half compared to over seven minutes) during the initial launch and even faster during subsequent launches (i.e., duing the same system-boot session). I may try SR4 again once I've completed the massive animnation project I've been working on for several months.

Intel Core I7 3090K 4.5 GhZ (overclocked) 12-meg cache CPU, 32 Gig DDR3 memory, GeoForce GTX680 2gig 256 Bit PCI Express 3.0 graphic card, 3 Western Difgital 7200 rpm 1 Tb SATA Hard Drives