it looks like if you tweak the settings a bit it should actually fix any fps issues you may have from liftoff. I haven't tested it yet but it sounds promising if you open the graphics settings config file and set vsync to false.
To access the config file, go to the folder you've installed the game to, then into binaries, and into settings. Open the file 'TKGRAPHICSETTINGS' with notepad, and find the line <Property name="VSync" value="true" /> and change that to false. Provided you are seeing FPS issues if you do try it out.
Also, make sure your CPU supports SSE 4.1 or higher, as if it doesn't no matter what your graphics card can manage, the game will just crash to desktop on startup.