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Old August 14, 2011, 04:30 PM
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Default High FPS but choppy gameplay with 5770 Crossfire

Hey guys,

I recently installed a second 5770 in my rig, and I've been having a major issue since; when XFire is enabled, my framerate increases but the gameplay itself becomes choppy (for example, when running BFBC2, I get 60-90 FPS on max but it looks more like 30-40). This issue isn't cause by screen tearing, as even when I enable v-sync and/or triple buffering I still get a choppy and stuttering experience.

I've tried doing the following to resolve the issue:
-Uninstalling/reinstalling CCC and GPU drivers
-Defragging my HDD
-Playing around with CCC settings (especially Catalyst AI settings)
-Enabling/disabling V-Sync
-Changing in-game settings
-Updating all drivers on the system


My rig:
-2x HD 5770 1GB @ stock
-Phenom X4 945 @ 3.4
-4GB DDR3 1600MHZ
-640GB WD Black
-64GB Kingston SSD
-BFG 550w PSU
I doubt that the PSU is causing the issue, as I ran a power consumption calculator and it said that my system should only be drawing between 400-450W.


Any solutions for the choppy gameplay?
Thanks
dimre01

Last edited by dimre01; August 14, 2011 at 04:53 PM.
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Old August 14, 2011, 04:51 PM
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you can't always trust those PSU calculators
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Old August 14, 2011, 05:39 PM
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Sounds almost like the second card isn't sending its frames to the display, so you're only seeing half the frames. Try re-seating the cards, or with just the second card installed?
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Old August 14, 2011, 06:05 PM
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Quote:
Originally Posted by Galcobar View Post
Sounds almost like the second card isn't sending its frames to the display, so you're only seeing half the frames. Try re-seating the cards, or with just the second card installed?
Hey man, I tried your suggestion but I'm still getting the same issue. Any other ideas?
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Old August 14, 2011, 06:07 PM
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swap them around? :)
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Old August 14, 2011, 06:21 PM
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idk much about crossfire so I only ask this because it does not seem to be mentioned at all. Did you mess around with the crossfire bridge(s)? Like, try with none, one alone, the other one alone, two, etc?
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Old August 14, 2011, 06:42 PM
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Sounds like micro stuttering to me. It is the reason why I always suggest going w/ a single faster videocard than two lower models crossfired.
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Old August 14, 2011, 07:00 PM
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Quote:
Originally Posted by lowfat View Post
Sounds like micro stuttering to me. It is the reason why I always suggest going w/ a single faster videocard than two lower models crossfired.
What if the two outperform the one for same/lower price?
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Old August 14, 2011, 07:25 PM
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Quote:
Originally Posted by _dangtx_ View Post
swap them around? :)
I just tried swapping them - still having the same issue.
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Old August 14, 2011, 07:51 PM
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Quote:
Originally Posted by Kommie986 View Post
What if the two outperform the one for same/lower price?
It generally will have a higher average framerate. But there are fractions of a second where it is actually lower than a single card. Which causes the micro stutter.
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