It is as if my fps drops below 20fps and everything is slightly in slow motion - even though my fps is a steady 60. I mostly experience this in Act 1 catacombs.
CPU: i7 @ 4.3Ghz
Ram: 16gb @ 1866Mhz
Gfx: GeForce GTC 580 @ 800Mhz
HD: 3G SSD disk
I haven't played since patch 1.0.1 so this is new to me and don't know when the problem has occurred.