Just tested it on my system @ 3150x3150 using P5 with the P4 renderer. I used Daz Mil Dragon with textures and Vic2 and it rendered fine in a separate window. I do have my virtual memory set to 4095-4095 (4 GB) so windows doesn't have to grow it when it needs more. I noticed as the render progressed it seemed to get slower but it eventually finished. TF, what is your virtual memory settings?