Turning off bump maps will also speed up render time and romoving references to them should reduce memory usage if you save and close, then re-open poser afterward. Transparency, bumps and shadows all increase render time. Do without them where you can. I usually composite several renders, using each one as a background for the next and doing a little cutting and pasting if necessary to get the shadows right. Go for low polygon props where you can also. That saves render time and hard disk space.

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