Flashing Green lights

Whenever I boot up the game the screen will constantly flash the colour green. It goes away when I press F1 but the second I click anywhere on the screen, the screen blacks out and the green lights come back

Hey there,

What GPU are you playing with, please? Are you playing in fullscreen?

Update your Nvidia drivers and see this article from Nvidia about this issue:
https://nvidia.custhelp.com/app/answers/detail/a_id/4580/