I uploaded a UI mod to the vault called FPS Unlocked which runs a console command at the start of every game to set the FPS cap higher. FA's normal FPS cap is 100. By default this mod sets the cap at 140. Change the variable of the console command to change the cap. Default is 7, setting it lower increases the FPS cap. 0 removes the FPS cap completely, this is not recommended.
Thanks to the console++ mod maker and to speed2.