In terms of trying to explain how the programming team would go about fixing the lag all I can say is it's complex and there really isn't any point listing this sort of thing.
We have been doing many system tests on the economy just now and each day or whenever the programmer has fixes we re-check those saves to check for fps improvements. We will then move onto the next system and so on. I cannot say exactly how many code changes there have been so far to try and improve fps just for the economy side but there are been quite a few re-tests.
