Interface Lag on huge projects

[NathanOtano]

Of course lot of pixels means of trouble. I have no lag at all while drawing or flipping within big projects (usually a huge layout for a long camera movement). But when I use Out of peg/Light Table, it slows down dramatically the actions. Same for transformations.
I assume this is a normal behaviour and it's difficult to correct that, especially the lighttable thing is annoying and I wonder if there is any way of compressing anything so it's quicker.
Hope it's clear, I'd understand if it's just difficult technically.