I have to admit that I have not concerned myself with those high resolutions. Probably because I have an older monitor and don't think of it. My only thought is to ask if you have set the alignment for all the tables and cells? If you have used percentages so the table expands, I would think the alignment shouldn't change.
I know this isn't answer, but thought I might try a couple of suggestions at least. Unfortunately, I seem to have only come up with one suggestion. Unless you consider "just don't worry about it" as a second one. 
Nancy
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Wrinkled is NOT one of the things I wanted to be when I grew up!
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