I just downloaded the recharged demo version, cool!
I have i7-2600 with 750Ti card, but i always see horizontal line, tearing.
Looks like v-sync is off. How can i switch to on? Its already enabled at nvidia 3D global settings.
Glad you found a solution.
Vsync is enabled on all the higher quality settings in Freerider, so I don't know why it does not work when you are not running aero. Perhaps you could try to run the simulator in a window and see if that makes a difference.
You can run it in a window by using command line parameters on the exe file. For example:
-screen-fullscreen 0 -screen-width 1280 -screen-height 720 -popupwindow