5870 xfire users help please

[kmufc77]

hi i have 2 5870s one XFX and one powercolor they are both connected by one bridge about to try 2 now for the first time.

I have issues with a few games :
cod mw2
left 4 dead 2
aion
Dragon ages origins
Resident evil 5 plays super smooth with xfire enabled with no stutters at all.


Left 4 dead 2 is the worst stuttering especially when u are in the safe house and ready to start a new mission, the frames plummet and if i press escape to the menu and turn off multicore game is back to normal with the occasional stutter?

I get stuttering with a few other game listed above or maybe micro stuttering not sure how to tell,ive tried loads of drivers also.
I know the 5870 is a new card and no official drivers till tomorrow,im just wondering if anyone else has a problem with xfire or maybe its windows 7 X64?
I know most games do not suffer at all when one gpu is being used.
ive tryed both standard and advanced in cat ai.
Temps are fine for both cards and dont go over 80c
ive got to the stage where im seriously thinking of selling one 5870 if this carrys on.

 

[kmufc77]

not had many replys yet?

just a update when i use just one gpu no stuttering at all in any games so its defo a crossfire issue?

 

[kmufc77]

Crossfire mate been getting the same problem today in cod WAW and bioshock. Ati need to get the acts together with the drivers. Not sure if it is down to windows 7.

hi are you having the same issues as me with several games?

 

[kmufc77]

well the official 9.11s are a lot better now for me for crossfire not 100% but miles better

 

[kmufc77]

I have 5870 CF with W7 and no issues at all

Have you tried altering PCIe frequency in BIOS ?

i dont believe it
i have just changed the pcie bus freq to 101 and my stuttering is completely gone,thanks for the great tip!
Briefly why has they solved my issues with crossfire?.

 

[kmufc77]

Did not work for me. WaW is no doubt a badly coded game for multi gpu setup.

check ur other games mate with the 101 enabled and report back.

 

[kmufc77]

Just tried bioshock and that still has fps issues. that is an older game though. I need to install better games lol i just cannot be arsed. FEAR 2 is the most recent game i have. And i remember that ran fine with crossfire.

Dont know what else to suggest,i feel your pain as this is the worst thing with multi gpus setups,have you tried other drivers,no doubt u have.
have you tried rivatuner (D3D Overrider) and forced Vsync ,triple buffering ive found that smooths outs some games!
Have you tried to change the catalyst AI from advanced to standard?

 

[kmufc77]

I run crossfire 4890's and have no issues with crossfire in COD MW2 with both 9.10's and 9.11's it runs perfect max everything!

Win 7 X64 + 9.11's work fine in crossfire here!

yeah ive just changed my PCIE freq to 101 and i have perfect frames now,wish i thought of that earlier as i was on the verge of selling one of 5870s