Some very nice tips here.  A couple of things:

1. There is an error in your opening paragraph 1) - where you state that a 4000 x 4000 image equates to 128 megs of RAM.  You are off by a factor of 8, it takes only 16 megs of RAM - its 128 MegaBits which equals 16 MegaBytes.  Also, the 16 Megabytes total may not be quite that high in actual practice especially if using compressed file formats like JPEG which can take the number down both on disk and in memory (provided that the application supports internal file compression as well which Vue does).  However, your fundamental point is correct in that Poser models often contain ridiculously large bitmaps.

2. Your point about connecting up the bump node to the grayscale channel of the color texture is a good one.  I wish more Poser character vendors did this as well inside Poser versus making a separate grayscale skin maps.  I usually just dump the separate map in Poser and wire up the bump channel to the color texture node so it comes across clean in Vue.

I'd like to see a tutorial on how to improve the accuracy and fidelity of the transfer between Poser and Vue (e.g. how to get bump settings to align properly, sizing, how to get better alignment of material properties, etc).

Thanks again for doing this.