BF3 7970 Crossfire problem

[ozzy702]

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]

Limit fps to 59 and turn on Vsync and report back.

Also 13.1 are way old drivers?

 

[ozzy702]

Limit fps to 59 and turn on Vsync and report back.

Also 13.1 are way old drivers?

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.

 

[Fx1]

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.

Limit it to 59. Not 60. your monitors refresh isnt 60.

 

[Dankk]

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

13.1 are a month old. I tried the 13.4 drivers and they sucked with mining so I reverted back.

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

 

[ozzy702]

Limit it to 59. Not 60. your monitors refresh isnt 60.

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

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?

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.

 

[BallaTheFeared]

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

No, that was the super special prototype 13.5b, the released version doesn't have the super secrete frame metering sauce. :thumbsup:

 

[Fx1]

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.

Try the 59 cap with MSI ODS

 

[aaksheytalwar]

CF is known for stuttering. Hard luck.

 

[BrightCandle]

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.

 

[Fx1]

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.

Im tempted to buy another 7970 just to test this.

 

[Black Octagon]

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.

Agreed. Though you could have also said 5 years to include internet forum anecdotes from all the people who have been burned

 

[Elfear]

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.

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.

 

[Fastx]

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?

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.

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

 

[Final8ty]

13.4
BF3 Quadfire running sweet.

Got my 5970's GPUs OC upto 975/1280

 

[Fastx]

13.4
BF3 Quadfire running sweet.

Got my 5970's GPUs OC upto 975/1280

You should post a Heaven 4.0 score and be the first and only QF so far.
http://forums.anandtech.com/showthread.php?t=2313189

 

[Fx1]

I guess the 59 FPS cap and vsync fixed his issues?

 

[ozzy702]

I guess the 59 FPS cap and vsync fixed his issues?

Haven't had a chance, been busy moving. I'll try next week after things settle down.