It's all relative I'm afraid, FGU running at 8GB is not a problem on my 32GB desktop but running it on an 8GB system would be, you have to work within the limitations of memory, just be glad you are using FGU, back in 2005-201x the FGC was capped (as a 32bit app) at 3.5 GB!
It nice to have everything loaded but at the same time if I were running a face-to-face game I would not have EVERY book I own open on the table in front of me, I'd have them closed in a stack or on a book shelf to get at if needed, think of your modules the same way :D
<Drat! did not notice Lord Entails had made the same point two posts higher :( >