Well, the game runs at pretty stable 50-60 FPS for me...Making only a 32bit exe nowaday is kind of MEEHHHHH. Larian should think about updating their engine/game to 64bit completely like every other "major" game in 2014 did so far. Or at least give 64bit users the possiblity to use a native 64bit version of the game besides the standard 32bit version. I think this engine could do with a lot of optimization (and a lot sharper textures).
32-bit code
is 64-bit compatible and can, in cases where >4GB memory access is not required, run faster than 64-bit code (due to the bottleneck between main memory and CPU - 64-bit code with 64-bit data structures needs twice the memory and so effectively halves the CPU-memory link speed compared to 32-bit code).
I mean, no real multicore support, only 4GB of RAM addressable but really heavy GPU load that melts even good graphic cards? MEEHHHHH again...
Your issues seem to be specific to your system (I and others have reported 3-4 core usage above) and if you're seeing 50-60fps, it does rather beg the question why you are complaining. Few LCD monitors can generate images at more than 60fps so you're likely near one hardware limit and if your graphics card is too hot, then that's more a cooling issue (my 580GTX reaches 70 deg C). Get a bigger fan!
