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Windows 10 + Crossfire issues

Mussels

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More of a collection of info than a help thread, but figured i'd put my findings out here. If i find more issues or fixes i'll post here, and would like others to do the same.
It is a pre-release OS so bugs are to be expected.


Running 7970/280x crossfire i've encountered a bunch of odd bugs with the few drivers available to windows 10, and thought i should share the findings.
Single GPU on either driver is fine, and many games perform better than in windows 7 or 8.1 - its personal experience, but it feels like some of the CPU limitations are reduced.

Using the windows update driver: (doesnt have a catalyst version number)
Starcraft II has severe issues, totally unplayable. Quite often the game would start and i'd still see the loading screen. Alt-tabbing would get me audio, but no video.

Catalyst 15.7 (at the time of writing the only driver available for download manually)
Starcraft II worked most of the time, but some of the ladder maps had 'lights' around the edges of the map that caused large flickering squares around them.
Video playback - even CPU driven - tends to freeze if the video is paused and left alone for a few minutes. Windowed mode/single GPU was fine for both on this driver.
 
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They can barely get one gpu going properly crossfire is always lacking. I hope they hire people soon that know how to fix drivers
 

manofthem

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This is a thread I'll pay attention to: subbed ;). I'm about to update to Win10 on my main rig with 290 crossfire, so this will sure to be of help.
 
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I just posted a reply on the 15.7.1 driver post. The driver for Win10 weaken my 280x crossfire. Im getting lower scores on synthetic benchmarks and fps too. CPU is fine though as it should be. I did both upgrade from win7 to win10 and reformatted win10. Same issue.
 

Mussels

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my 280x is now being replaced with a 290, so i have not been able to test catalyst 17.1 to see if it fixed anything.
 
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like need better driver for win 10
 
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i have found with the latest drivers and 7970 GHZ i need to disable and re-enable crossfire in CCC every reboot.
 
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I have serious crashs on intense GPU games with my HD7990, under BF4 the catalyst crashed nine times out of ten
 
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You think you're having problems with CrossFire, try QuadFire! Absolute nightmare...
 
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w


You're running quadfire (i.e. 2 x 7990)?

Performance is waaaayyy worst than Crossfire for me...
No, just one HD7990. Crashing since runnin' BF4 on Win10x64
 

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I just posted a reply on the 15.7.1 driver post. The driver for Win10 weaken my 280x crossfire. Im getting lower scores on synthetic benchmarks and fps too. CPU is fine though as it should be. I did both upgrade from win7 to win10 and reformatted win10. Same issue.
I noticed this with just my single 390. I think performance dropped with this driver in general. I'm uncertain if it's Windows 10 or the driver. I didn't try 15.7.1 on Win 7. Other than less performance, it's been perfectly stable so far but, I'm not running CFX anymore either.
 
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