Now you can enjoy over 60FPS in game, Lag is history.
Fined tuned game objects for better performance in Mac/Linux/Windows Builds, added graphics/performance options on the in game menu (turn off explodable objects/grass turn off/on/draw distance/quality setting), so you can adjust according to your machine's power.
Check out the Fraps counter on the top right:
Screenshot taken from machine with Intel Core i5/Nvidea 760 GPU, 8Gb ram
I hope you can enjoy the update.