I just tried working with 3 V3s + clothing/hair on my AthlonXP 2700+ system - comparable to yours. My system is still quite responsive using the OpenGL preview. It has a Ti4200 graphics card - a lot faster than the GeforceMX. It is also equipped with 1 GB RAM and 2x80 GB ATA100 drives in RAID 0, with about 40% free space. Another issue might be the RAM. You mentioned 4.48 GB, I think that might have been a typo. How much RAM do you have? If it is less than 1 GB, you can expect your system to be slow with 3 V3s. It is unlikely that the linked runtime slows your system down. When manipulating the scene there is little or no disk access. Most of the disk access is due to virtual memory use - and you can improve virtual memory performance by setting the page file to a fixed size (I'd recommend 2-2.5 times the size of your physical RAM, with a maximum of 4 GB). Another thing: NTFS performs better on large drives than FAT32. So unless you use your external drive on other machines that do not understand NTFS (Win95/98/Me, Macintosh) I'd advise converting the drive to NTFS. Easy to do, just go to the command prompt (Start->Run, and enter 'cmd') and enter the following command: convert [drive letter]: FS:NTFS and hit Enter.

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