C&C 3 Graphic Problem

What graphics card does your Mac have?

 

also..

make sure it's running the latest patch!

 

Same thing with me! i have tried reinstalling the game, i made new profiles, and i have the latest patch, but it doesn't works!

 

looks like bullet streams (which would be actual in game effect).

Or it could be a game debug problem..all flying vehicles when charted in 3d engines have a tracer line which weights them down to an area on the ground. It's a usually invisible line that's drawn that plots vehicles floating in the air or underground or in water so that the game can map out where the vehicle would rest if it were to land on to ground. It's also used to detect whether a flying vehicle is over water or land, and that way prevent it from landing on water.

Install any patches - because this looks like a game problem not hardware. If that doesn't work try updating your graphics drivers.