I search in all other topic for similar problem to mine but I could'nt find any.
I have just installed RA3 on my Windows 7-64 bit computer, which has a Quad CPU Q3800 2.50 GHz processor, and the ATI Radeon HD 4300/4500 series video card.
When I start the game, the main menu runs perfect and the videos are clear. But when I start playing, the map's colors interact and expand somehow, and shows weird colored triangles on it. The game is not lagging , and the units move fast. I tried changing the graphics to "very low" but that had no effect at all.
I wonder if any one here had similar problem and solved it, or anyone that can suggest a solution to this problem. I can take a screenshot for that if needed.