I had the same issue, I think it's just the sheer number of files in there, I fixed it myself by moving half the bmp's, half the fpe's, half the x files to a new folder, and then copying all of the dds files into the new folder (had to do it that way because your models share dds files and it's a pain to sort them out). Once that was done everything worked fine.
i7, NV960 4GB, 16GB memory, 2x 4TB Hybrid, Win10.
i5 , AMD 6770 1GB, 8GB memory, 512GB Generic SATAIII + 2TB Seagate Baracuda SATAIII, Win7.
i3, Radeon integrated graphics, 4GB memory, 512gB Generic SATAII, Win8.1.
Q6600, Intel integrated graphics, 2GB memory, 180GB Generic SATAII, WinXP.