CPU: Intel i7 4790 (Stock)
GPU: R9 295x2 (Stock)
RAM: Kingston HyperX Beast 16GB 2133CL12
Motherboard: MSI Z87M-Gaming
Storage: Samsung 840 EVO (OS)
Storage: WD 1TB 7200RPM (Game)
Display: Dell P2415Q 4K
VSync ON @ 60 FPS
Performance was almost beyond perfect. The game looks fantastic, and somehow manages to throw all this gorgeous stuff in front of you without dealing to much of a hit to your hardware. I don't think I've ever encountered a game this well optimised before, which is a credit to GGG's tenacity with their title. I've dumped almost a hundred hours into the game, and in the last year the bugs have been all but non-existent. The game runs beautifully, save for one thing, and that's almost an inherent problem with the nature of the game. A long while back there were considerable issues with desync - your character would sometimes pull off so much so fast, what's on your screen wouldn't be in sync with what the server was processing at the time. Any character builds that utilised a skill that did insane amounts very quickly, such as a flicker strike orientated build or a discharger, would face the desync hell frequently. Now this desync issue has been resolved for the most part from what I can tell. I have however noticed a couple of instances of crashing. Since the patch on Tuesday the game seems to be a little more crash-heavy on Window 10. The patch was designed to resolve a memory leak issue, which it did, but it introduced some slight instability.
For reference, you can see how your GPU will perform in comparison to ours with this set of charts.
NOTE: Precisely 50% GPU usage means only one GPU was put under load on the 295x2. This may indicate a lack of multi-GPU support.