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BF3 7970 Crossfire problem

O

ozzy702

Golden Member
i7-3770k @ 4.2ghz
Asus Z77 Saberthooth
Sapphire 7970s in Crossfire
Corsair TX-850
GSKILL 1866mhz DDR3 X 8GB
13.1 Drivers

Running BF3 without crossfire and all high settings I'm pulling a constant smooth 60fps with the occasional dips you get with 64 man servers. Very playable.

When I turn on crossfire (regardless of keeping at high settings or going higher) I get stutter, fraps flips between 59 and 60fps but it feels jerky despite GPU and CPU usage being below 50%.

Ideas?
 
Fx1 said:
Limit fps to 59 and turn on Vsync and report back.

Also 13.1 are way old drivers?
Click to expand...

13.1 are a month old. I tried the 13.5 drivers and they sucked with mining so I reverted back. I had issues with the stutter on both drivers after clean installs.

Vsync is on and matched with my monitor's refresh rate of 60. I'm also playing at 2560x1440.
 
Last edited by a moderator:
evilwhitey said:
13.1 are a month old. I tried the 13.4 drivers and they sucked with mining so I reverted back. I had issues with the stutter on both drivers after clean installs.

Vsync is on and matched with my monitor's refresh rate of 60. I'm also playing at 2560x1440.
Click to expand...

Limit it to 59. Not 60. your monitors refresh isnt 60.
 
Install the 13.5 beta from AMD's website. It's supposed to have some huge improvements for crossfire setups.

evilwhitey said:
13.1 are a month old. I tried the 13.4 drivers and they sucked with mining so I reverted back.
Click to expand...

What's more important to you? Smooth gaming, or bitcoin mining?
 
Fx1 said:
Limit it to 59. Not 60. your monitors refresh isnt 60.
Click to expand...

Why do you say that? I'll try changing to 59 and see it that works.

LessThanDan said:
Install the 13.5 beta from AMD's website. It's supposed to have some huge improvements for crossfire setups.

What's more important to you? Smooth gaming, or bitcoin mining?
Click to expand...


I'm mistaken, it was the 13.5 betas I tried, still played the same except mining took a massive hit. Mining is most certainly more important since it makes $$$ and being married with a kid and working 50 hours a week I only average 5 or 6 hours a week of BF3.

Just curious why it's stuttering now. I've ran crossfire before with no visible stutter.
 
Last edited by a moderator:
evilwhitey said:
Like I said, I tried the beta, still played the same except mining took a massive hit. Mining is most certainly more important since it makes $$$ and being married with a kid and working 50 hours a week I only average 5 or 6 hours a week of BF3.
Click to expand...

Try the 59 cap with MSI ODS
 
You must have missed all the reviews from everywhere over the past 5 months. Crossfire is broken, BF3 is one of the games impacted. It will be at least a few more months before AMD even begins to put out a fix.
 
BrightCandle said:
You must have missed all the reviews from everywhere over the past 5 months. Crossfire is broken, BF3 is one of the games impacted. It will be at least a few more months before AMD even begins to put out a fix.
Click to expand...

Im tempted to buy another 7970 just to test this.
 
BrightCandle said:
You must have missed all the reviews from everywhere over the past 5 months. Crossfire is broken, BF3 is one of the games impacted. It will be at least a few more months before AMD even begins to put out a fix.
Click to expand...

Agreed. Though you could have also said 5 years to include internet forum anecdotes from all the people who have been burned
 
evilwhitey said:
I'm mistaken, it was the 13.5 betas I tried, still played the same except mining took a massive hit. Mining is most certainly more important since it makes $$$ and being married with a kid and working 50 hours a week I only average 5 or 6 hours a week of BF3.
Click to expand...

You might have something set up wrong then because my Mhash rate has stayed pretty consistent from 13.1 through 13.5b. For one 7970 I get ~630Mhash/s at 1050/340.

I would do as others have suggested and use a frame cap at 59fps and vsync.
 
evilwhitey said:
i7-3770k @ 4.2ghz
Asus Z77 Saberthooth
Sapphire 7970s in Crossfire
Corsair TX-850
GSKILL 1866mhz DDR3 X 8GB
13.1 Drivers

Running BF3 without crossfire and all high settings I'm pulling a constant smooth 60fps with the occasional dips you get with 64 man servers. Very playable.

When I turn on crossfire (regardless of keeping at high settings or going higher) I get stutter, fraps flips between 59 and 60fps but it feels jerky despite GPU and CPU usage being below 50%.

Ideas?
Click to expand...

Radeon Pro.


Originally Posted by phildogtheman

When I used to have my crossfire setup there were 2 things I could do to minimise microstutter.
1. Use vsync religiously
2. Play around with the Flip Queue.
90% of the time setting the Flip Queue to 1 would pretty much eliminate all microstutter. Although some games preferred a different value (Arma 2 for example which only ran smooth at a value of 2)


I just want to say thank you!!!! Flip Queue resolved my issue. You just made my weekend.
Click to expand...

Link #1 ^
http://www.overclock.net/t/1234579/7970-crossfire-bf3-microstutter-issue-resolved/40

Link #2 reference FQ - Radeon Pro

http://www.xtremesystems.org/forums...Queue-Size-Nvidia-Maximum-Pre-rendered-Frames
 
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