Hello,
version 1.0j has just been released.
This version allows the engine to render faster than 60 images per second, up to 144 fps ; this means if your monitor supports a refresh rate higher than 60hz, the game will look a lot more smooth.
Also, depending of your setup, the game may also look smoother at 60hz, especially as the time polling got a couple of fixes.
Changelog since release of the game on Steam can be read here : http://steamcommunity.com/app/346470/discussions/0/618456760265331075/ .
Enjoy ! ːsteamhappyː