It runs smooth, but, you can see how low the fps can drop. It's only a issue in town, I haven't had any drops outside of towns/cities.
The game was running @ 1080p, all settings maxed (w/Fxaa) using the high res texture pack.
Sorry about the quality of the video, I had to cut the file size down major to upload.
My FX 8320 is Oc'ed to 4.4
My Asus GTX 780 is at stock
This was recorded using Nvidia Shadow play, the true video was in full 1080P, but almost 800mb in size, way too much for my 70kbs upload.
*The fps is much clearer on the 2nd half of the video. The down conversion made it almost unreadable in the first half.