Well that was dissapointing. I'm getting better fps in cities (But the SWTOR servers were upgraded this morning so I think it's a coincidence) but in combat I'm still dropping to the mid 40s and the fps meter is red so It's apparently still the gpu.
check the SWTOR forums. there have got to be people there with your gpu/cpu, who can point you to the best combo of settings and drivers.
I'm pretty sure i have AA turned off for me... and my resolution certainly isn't 1080p (its an older monitor)... but that's because i knew my gpu wouldn't push out the fps needed to max my monitor. but still your hardware is so far better then mine i know there is a magic mix you can use to bump that up. ask around the tech forums. someone will point you to the right drivers/settings