OP I feel for you! I'm running on the low end as well (Core 2 represent!), and in the last couple of hotfixes, I've started to get severe FPS drop when large groups of things pop up (aka Weight of the Land and Coil 4 bugs). I try to compensate for this as much as I can, but sometimes I'll still get hit. Still manage to get multiple relics and beat Coil 4 though. :]

Paying the bills comes before buying a shiny new computer. People like us have to work harder, and our FCs have to wait a little for us to load into zones, but we can still be good players!