You’ve already helped me quite a lot, thanks for your time!
If i delete all columns which i do not cache, the time is cut from 15 to 10 seconds. Which is strange since this would mean I’d be better off by creating an article table with just the columns to cache and another one with a 1:1 relationship for the other columns.
Anyway, I’ll try play around with more tomorrow.
BTW: If anyone wants to serialize the whole table without having the linked columns as Live Objects this post helped me Dynamic serialisation of data table rows