I have Game Dev on Win 7 ultimate and have not seen the problem.  Your Screen save image shows Poser  running the 32bit version.  Do you have the same problem with the 64bit.

Where are your runtimes located?  Is Poser the only one having problems if not you may have a disk beginning to fail. 

 

 

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.