i5-3570 3.40 GHz
Geforce GTX 650 Ti 1GB
16 GB DDR3 RAM
ASUS P8Z77-V MB
Windows 7 64Bit
I fully expect to get no solution out of this, my own internet searches have confirmed that I am the only human being to have ever had this problem.
Got this PC custom made a bit more than a year ago, and for the most part, it operates swimmingly. Considering an upgrade to the GTX 660 Ti, but that will wait until prices go down a bit more.
However, in certain games, framerates are obviously choppy for no real reason whatsoever (sorry, but I don't collect FPS data for all my games, I could run benchmarks if someone wants me to. When I say the FPS is noticeably bad, just trust me on this). Most of these games, I've noticed, either have DX 11 as an option or just run on DX11. Just as random examples, four of these games are Bioshock Infinite, AC 3 and 4, and FarCry 3.
The FPS in Bioshock Infinite just constantly remains choppy, no matter how much I tweak with the settings (I know that Youtube videos aren't the best place to get information on how my card should perform, but I should at least be able to get a stable FPS). Additionally, Elizabeth herself in Bioshock Infinite suffers from a LOT of physics glitches/bugs. Her hair and dress just go nuts for no particular reason.
AC 3 wasn't much better. Terrible framerates (even in the menus, when there is no 3D rendering going on), the robes on the main character would freak out and graphical glitches abound, especially in the ship at the start of the game.
AC 4 didn't have the graphical glitches, but it does have a constant choppy FPS.
FarCry 3 is interesting, because enabling DX11 on it slows EVERYTHING down to a crawl, including the company logo intro screen and the main menu (again, where is no 3D rendering going on). Switching to DX9 however, and I can just bring all the settings to the max and have an excellent, playable FPS.
Just in comparison, the same video card runs BF3 with no problems whatsoever, and recently ran Outlast just fine at full settings (I know Outlast isn't a graphical powerhouse, but it wasn't a simple looking game either).
The glitches in Bioshock Infinite and AC 3, and the slow running menus in FarCry 3 make me think that there is some basic flaw going on somewhere, but that's just conjecture on my part.
So guys, what the hell is going on?