I use a Geforce 6800 Ultra with a 2.0 ghz AMD64 and 1.5GB of ram.
It stays smooth, except on the nav map when there's a lot of traffic at high time-compression. For example, in the English Channel at 1024x, it routinely drops down to <10fps, and I have to decrease to 512x or 256x compression to bring it back up above 30fps.
Here's the funny thing. When I use that DirectX Tweaker I was talking about, and use the "Force Shader P" option, I see an enormous difference in the nav map frame rate. I see a little bit of an increase when I'm using the external camera to watch explosions, but the nav map is entirely faster. Haven't really recorded any statistics for it, but it's probably 50%; I can leave the compression at 1024x, and it *never* drops below 30fps. Not ever! And that's on the bloody nav-map!!! What the HELL Ubisoft was doing on the nav-map, I don't know, but whatever it is, it destroys video cards.
And this is consistent with my upgrade from a 5900XT. Same processor, just different GPU. And I saw an immediate increase on my nav-map framerates, which doesn't quite make sense. I would think the nav-map is CPU dependent, not GPU dependent...
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