I contacted Ironclad on this issue and here is their response in "":
""At comparable detail settings, Entrenchment v1.02 does not use significantly more memory compared to versions of Sins before v1.16; that is, 1.5GB of memory use is the expected amount to be used. I am sorry to say that it is unrealistic to expect that Entrenchment's performance would be comparable to Sins as the new content in the expansion inevitably requires increased computation. If you find the performance to be unsatisfactory, I would recommend playing on smaller maps, with fewer players, on lower detail settings, or some combination of the above.""
This is pretty much a blow off for a pretty bad issue of major slow downs. I don't care about the memory usage since I have over 1gb ram free still. I do care about the extreme slow downs at end game. This expansion is very small and at $10 half the price of other expansions for other games but with less than 1/4 the content updated for most games. Also most game companies with a huge title like sins would work to correct issues. Especially performance issues.