I’m not 100% sure ATM, but I think the game has both DX9 and DX10, maybe one works better for you than the other. Please try to switch between them. Requires a manual ini edit in Codemasters games. Off the top of my head: [Documents\My Games\Formula1 2013\hardwaresettings\hardwaresettings.xml]. Look for a setting called ForceDX10.
Apart from that please check the things from trouble shooting guide in the help regarding not hooking games in case you haven’t done so already.