In my experience, setting vsync to “always on” in the ATI and NVIDIA drivers doesn’t help. Without vsync enabled (and it’s disabled by default) you’ll see lots of tearing (a sort of screen fragmentation) in DOOM 3. Turn on vertical refresh sync When you get into the game, the first thing you’re going to want to do is enable vertical refresh sync, or vsync. If you have an ATI card, you might try turning off the second monitor, as well. Some readers have suggested that ATI cards show similar performance problems with dual monitors enabled, which could explain my initial reaction to performance on the Radeon 9800 Pro. I went through this exact process myself, and it worked for me.
The monitor showing DOOM 3 must be both the “primary monitor” in Windows and “monitor 1” on the graphics card. If you get an all-white screen (or any single-color screen) when you start up DOOM 3, though, you have more work to do. Scroll down to “Hardware acceleration” and pick “Single display mode.” That should do the trick. You can go to the “Advanced” config menu for the NVIDIA driver, go to the “Performance” section, and check the “Show advanced settings” box. Several readers have also suggested a more elegant fix where you don’t have to turn off your second monitor. Turning off the output for second monitor (by unchecking “Extend my Windows desktop onto this monitor) immediately fixed the problem. After lots of checking settings, updating chipset drivers, and futzing about, I figured out that the problem was this: I have two monitors on my system. The thing would run OK in some places, but in others, it was literally a slideshow and wholly unplayable. I put in GeForce 6800 Ultra OC.) I was shocked to see performance drop massively with the move to the NVIDIA card. (Yes, folks, the Radeon 9800 Pro 256MB card in there was running a little slower than I wanted, so I thought I’d go for the latest. Get those installed before you start.Ĭareful with the dual displays Now, I’m not sure if this problem is something everyone already knows about or what, but in the middle of tweaking my system for DOOM 3, I did something I hadn’t for quite a while: put an NVIDIA graphics card in it.
Update your drivers Of course, the number-one thing you can do is go get the latest video drivers from ATI and NVIDIA. I got my hands on DOOM 3 today, and I’ve discovered a few helpful tweaks for the game.
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