"OK there must be some memory issue still in P6 i say this because P5 never had this problem and you could put the render settings to maximum and it would still render" I recall many people complaining about P5 having stopped or become frozen during a large render with intensive settings. There wouldn't be a warning, it would just freeze up. Fact is, turning up the automatic settings all the way to maximum isn't exactly an efficient way to use the renderer. I'm not sure why they have an automatic settings feature like that, but using the manual settings, and assigning values to each parameter in a balanced, logical manner is much better. Texture filtering - there's really only a few reasons to ever need this enabled. One of them is if you have a high contrast pattern that gets mottled at certain distances from the camera (ie., a checkerboard pattern assigned to a ground plane, or things like that). Some people use it for hair, but I've never really found the need to use it for that... a low shading rate (0.4-0.2 or less) with proper post filter settings and pixel samples works just fine for a clean render under most conditions. In scenes that are extraordinarily heavy, and still don't seem to render even after optimizing render settings, you can always attempt to render it in "passes" (like rendering out the background first, then the forground or character elements), and just composite them together in post. For textures that are seemingly too large, perhaps try compressing them again in Photoshop to a smaller file size (while preserving their details), and save them to a different file name. Most of these super-high-res textures can be easily re-compressed down to half their original file size, while having very little or no visual impact on their details.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.