These images sure make the computer work. Yes it does take some time to munch those 2K images. Some things are quicker then I'd expect while others are taking longer.
Median filters are slow.
I have been able to reduce a few of Tom's 2k x 2k image to object lists. Not to bad. The point of this exercise is just to see if the images are usable and if a reduction pipline can be built and to get a rough idea of the processing time. It all looks good so far.