DarkoMaledictus
Tier Whore
Also running a GTX 780 ti, I've checked it - it's not the VRAM. Overall I get wildly differing fps, it hovers around 60 for the most part but dips hard into the 40s whenever I drive. Then there are some spots that are even worse. I did some testing on one of the worst - conveniently located just outside the safehouse. All tests were done at 1920x1080 and with temporal SMAA.
First: everything at lowest possible, vsync off (obviously) http://i.imgur.com/yuEkZVe.jpg
57 fps. VRAM at ~2500. GPU load 45 %. Oh, and a funny thing happened - the GPU strain was so low that it automatically clocked itself down to 901 MHz! But still not even 60 FPS! CPU load didn't get included in this picture but it was about the same as the rest, 60-70 %.
Next: textures at medium (aka lowest), everything else at max.
39 fps. VRAM at ~2300 . GPU load 50 % (but at least with normal clocks), CPU load 70 %.
Finally: ultra textures, everything else at max.
38 FPS- VRAM at ~2900 which is basically max for the GPU. GPU load 53 %. CPU load 73 %.
So yeah... it's not a VRAM bottleneck, not a CPU bottleneck and there's no justification why the game can't run this scene at higher than 57 fps with the absolute lowest settings. I imagine that an i7 could be what makes some people with a 780 ti be able to run it at above 60 FPS (I'm also running an i5), but it still reeks of horrible optimization. No wonder it got delayed. They should have delayed it longer from the looks of it, guess we'll have to pray that it get's patched in the future.
Dude I'm not even surprised. Ubisoft does not know how to program pc games. They do that shit with all AC games, only game that seemed optimized is RAYMAN, and that probably didn't require too much to run...