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How to fix crappy crossfire scaling in BF3

post #1 of 19
Thread Starter 
This is a very silly solution, but trust me it works.
HT does not make a difference.
CAP does not make a difference.

The solution is starting a new power cycle to your PC by shutting down, switching off/unplugging your PSU, turning it back on and starting the game.
Your scaling should be in the 80-99 range like it should rather than 30-60

Why does this work? I don't know, but it does. That's why I find it silly.

The reason why people claim turning off HT helps performance is because by turning off HT your motherboard forces a new power cycle. HT itself does not make a difference; I've tested it just now and I get the same results.

Have fun enjoying your performance.
post #2 of 19
didn't I just read that in BF3 6950 CF scaling was about 95%, and that for all the 6900s it was like 87%-95%
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post #3 of 19
I find another solution.When you start game,hit Windows button to go in Windows mode,then go back to full screen.You're second card wil start now and you wil get almost doubble framerate
post #4 of 19
So you don't think HT On gives any stuttering at all? I'll try it out, definitely.
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post #5 of 19
Thread Starter 
Quote:
Originally Posted by StarDestroyer View Post
didn't I just read that in BF3 6950 CF scaling was about 95%, and that for all the 6900s it was like 87%-95%
In a perfect world yes that would be it. But for me (and presumably a lot more people) we are experiencing scaling <50%.

Quote:
Originally Posted by Reactions View Post
So you don't think HT On gives any stuttering at all? I'll try it out, definitely.
In my tests, it did not make a difference.

It may or may not be different for you.
post #6 of 19
will try both these methods tonight after work.. ive given everything else a try so why not, nothing to lose!
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post #7 of 19
Thread Starter 
Bump for those who may find this useful
post #8 of 19
Quote:
Originally Posted by kiwiasian View Post
Bump for those who may find this useful
Also, your Regedit program and this tip are now in my BF3 Crossfire guide.
    
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post #9 of 19
That won't fix the stuttering.
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post #10 of 19
Quote:
Originally Posted by SkillzKillz View Post
That won't fix the stuttering.
Its just something else to try for those having issues. You really have nothing to lose.
    
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