I've noticed that all the other topics regarding getting doom 3 to run faster have false information on how to go about doing so. Well, I think that this may be a post on one of those topics, but incase you missed it, here it is. Alright there is a topic stating that if you go into doom config file and change the
seta image_cacheMegs 20/seta image_cacheMegs 32
to a higher number, then you would experience higher frame rates. This is not true. After thoroughly benchmarking this test, I have found that it offers no increase in performance what so ever. However, changing a couple other options right along side this one, WILL have an effect on performance. Here's what you do. If you have 1 gig of ram like me, then go into doom.config and change the seta image_cacheMegs number to 256. After doing so, change the seta image_useCache number to 1, then finally change the
seta image_cacheMinK number to 20480. So when you're done, it should look like this
seta image_useCache "1"
seta image_cacheMegs "256"
seta image_cacheMinK "20480"
If you have 512 mb of ram, then cut those numbers in half. Keep the "1" the same though. This gave me a HUGE performance boost. I have a Pentium 4 3.4ghz Extreme, a Radeon 9800XT, and 1 gig of Corsair DDR ram. I normally played on ultra settings at 1024x768 and I would get solid frame rates except when going into large areas with lots of baddies. At times the frame rate would drop to below 20fps. Now, my frame rate hasn't gone below 30fps yet! Good luck.
NOTE: I didn't discover this, I don't even want to touch Doom 3 but I figured people would want to enjoy it more than with a constant -10 - 5 FPS to a possible 30 FPS. Someone over at GameFaqs did this.
~Rhett
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