I'm trying to get SC4 to run at my monitor's native resolution: 2560x1440. Running the game in directX mode (using the -d flag) spits out a "graphics card could not be initialized" error message. (That's important, as it means SC4 supposedly supports a 2560x1440 resolution, as trying to launch it with unsupported resolutions like 2560x1600 or 1024x767 simply doesn't launch the game/renders it at a default 1280x1024.) Launching it at 1920x1200 works perfectly fine.
I switched to software rendering mode, and 2560x1440 works, but the game is uncomfortably slow/laggy. It runs smooth at 2560x1440 in OpenGL mode, but I get a weird bug where everything in the city view is white (though this happens at any resolution).
System info: Phenom II X4 980 @ 4.0ghz, 2x AMD 6850 1gb, 12gb RAM, Win 7 SP1 64 bit (I did a clean install of the OS a few weeks ago, so there might be some drivers/programs I'm missing), latest Steam version of the game (build 641 I believe). All OCs are stable, and shouldn't be a problem. Drivers are the newest version. All CCC settings are default as far as I know (though I'm not entirely sure). CrossfireX is disabled. I haven't messed with any of SC4's .ini settings yet.
Anyone know how to launch it in DX mode or getting rid of the OpenGL bug?