Something is weird with that review.. maybe they had bad cpu? Too little memory?
I dont believe that GTX Titan is the fps bottleneck with their testing setup.
I have gtx 660 ti and i5-3570k. I play with highest settings at 1680x1050, and I have yet to see any performance issues. I disabled the filters and antialiasing though. They make everything look worse.
What are those filters you are talking about and how to disable them ?
I can't wait for the proper nvidia driver though it's kinda annoying.