What graphics card are you using, if it's alright to ask?
That's strange, that card should manage the game fine. Did you change any of the graphics settings before you started playing the game?
Could you detail the problem you are having a bit more? What do you mean by 'flashing in rgb' ?
When I started the game and the LavaLamp Games logo appered on screen but in poor resolution. When I got into the game menu, the whole screen seemed to have a flicking overlay of rgb. It would alternate between the colors very quickly and seemed to have no pattern. I could still see the game behind it. After spending about 5 minites in game I could see no other problems besides the screen. I hope this helped.