As many have already repported, i'm also experiencing a hudge issue about framerate on this game.
Strangelly this lack of framerate start with the game. The menu is very slow (even the "press to start").
The sound is just perfect (no latence), but the display don't follow.
I've try many things, like playing windowed with everything at low quality, but it is not a real success.
For information, my configuration (and many technicals things) in the hardinfo attached.
- Processor : 4x Intel® Core i7-4600U CPU @ 2.10GHz
- Memory : 10114MB
- Operating System : Linux Mint 17.1 Rebecca
- VGA compatible controller : Intel Corporation Haswell-ULT Integrated Graphics Controller
If you have any clue (or any incoming patch) to help, i'll be happy to test further.
PS : this laptop runs many game greedy on resources (and somes that use Unity3D like "Hard West" or "Kill The Bad Guy")