FPS problems in dual dvi mode

thekarney

Member
Jan 13, 2005
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I am having serious fps problems when running two or more games/apps with any video motion on both screens at the same time. This includes Windows Media player visualization which I can run at like 500fps on one screen but drops to about 1-5 fps when its running with a game on the adjacent monitor.

I thought at first that it might be just an overload for memory but I have 1gb of high speed ram at 2-2-2-8 timings and a gfx card with 512mb of ram so I don't think it's lack of resources.

I also thought it may be a driver problem so I updated the vid card with the latest catalyst drivers and still the same problem.

Anyone else have any ideas or questions to help me narrow the problem down?
 

Peter

Elite Member
Oct 15, 1999
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Most of today's graphics cards have only one acceleration surface available. This means that when you're rendering 3D or watching a video, you can't do anything similar at the same time. One or two screens doesn't matter.

The media player visualization does use such a surface - that's why it's losing all its speed when you're playing a game at the same time.
 

thekarney

Member
Jan 13, 2005
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The only time I have problems though is when its in windowed mode. Even one application will run at 1-2 fps when in windowed mode including Windows MP. When I go to full screen visualization though, the problem goes right away.

Thanks for posting.
 

SonicIce

Diamond Member
Apr 12, 2004
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Maybe it's slowing the core and memory clocks when the game does not have focus?