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Crossfire causing stuttering in games

shauncr91

shauncr91

shauncr91

Soldato
Joined
28 Dec 2007
Posts
11,550
Location
Sheffield
Recently built up a new PC with the following spec:

i5 2500k
Asus P8P67 LE
Crossfire HD 6870's
12GB RAM
Antec 650w
SSD for Windows, HDD's with games etc on.
Windows 7

When I enable crossfire I get a stuttering problem in games, it's like a repeating glitch every 1-2 seconds and not generally bad FPS, when I disable crossfire in CCC and just use one card the problem goes away.

Does anyone know how to fix this problem?

Thanks
 
This article may be of interest to you and well worth a read, in my opinion.:)



IDENTIFYING MICROSTUTTERING
"Microstuttering" is a term used to describe a general inconsistency regarding the time between two frames being displayed, and could be best described as a rapid, noticeable shift between a high frame rate and a low one. In an ideal situation each frame is output at equal or very similar intervals, producing smooth and even gameplay, but this isn't always the case even with a single video processor. Microstuttering is a compound issue caused by an improper frame output synchronization between multiple GPUs and a lack of compensation mechanism to assist in normalizing frame delays. This phenomenon becomes progressively easier to see at low frame rates since there is greater time between frame output, but can reduce the subjective frame rate at higher numbers. As previously mentioned, this problem is found on any multi-GPU scaling system drawing frames that require multiple rendering passes. The use of vertical synchronization (and, if possible, triple buffering) can reduce the prevalence of this to some degree.

This may also help, and the linky.:D
 
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It sounds like microstutter, does disabling v-sync help?

If this is your first time multi-GPU it might just be something you'll need a bit of time to get used to, the human brain has a great tendancy to adapt I bet you'll hardly notice it after a few weeks.
 
I had this, my issue was MSI Afterburner, do you have that? If so disable it, or any other hardware monitoring software, I believe it's down to the polling rate. Could be wrong about other software but MSI was the one causing me headaches.
 
chief barker said:
no stutter with my 5970 5870 set up.

As previously said it must be something else.

BF3 Beta on the other hand. We shall see.
Click to expand...

You have 3 GPU's and the OP has 2.

Micro stuttering seems to be almost eliminated using 3 GPU's in Crossfire.

See here.

For some reason the third GPU almost always eliminates micro stuttering and has a less-pronounced effect on performance.
Click to expand...
 
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Im also getting a little micro stutter with a couple of 5850s in crossfire while playing Crisis 2 in eyefinity.Would be interesting if there is some kind of fix for this. FPS arn't too bad as im getting around 40-50.
 
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