Wow, if you are doing a MMORPG you are better off just buying a better computer and breaking up everything into smaller manageable parts. 6gb of ram is very small for a dev computer. You can get away with 16 but 32 is more the mark. When I do larger projects like a big map. I use two ssd in raid 0 as my boot drive and assign large amounts of virtual memory. It still takes forever but you won’t be limited by ram.
How big is your team?