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7970 crossfire - BF3 microstutter issue (resolved) - Page 3

post #21 of 53
Have you tried the in game console command to see if there are visible latency spikes for GPU or CPU? When I have HWInfo enabled to record my VRM temps I get a nasty GPU spike every few seconds.
Both the GPU and CPU should be relatively flat and on the same line if things are running smooth.

Open console and type 'render.perfoverlayvisible 1'
post #22 of 53
Thread Starter 
Quote:
Originally Posted by nugget toes View Post

Have you tried the in game console command to see if there are visible latency spikes for GPU or CPU? When I have HWInfo enabled to record my VRM temps I get a nasty GPU spike every few seconds.
Both the GPU and CPU should be relatively flat and on the same line if things are running smooth.
Open console and type 'render.perfoverlayvisible 1'

OHHH, this is quite interesting. I use HWinfo while I am gaming to record my VRM highs, just for later reference. I will keep it off while dealing with this issue, then.

Thanks for the info, will certainly use this command tonight.
Edited by svthomas - 3/27/12 at 11:52am
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post #23 of 53
See there, I don't run HWinfo at all when I'm playing. I could turn it on and see if it starts for me just to help out. I'm going home now wheee.gif

Edit: Ok, home and tried running BF3 with HWinfo on in the background and got no microstutter at all. Used 4xEQ in CCC and Fps was 80ish with Ultra settings. I'm on Rc11 right now tho.
Edited by Hambone07si - 3/27/12 at 1:04pm
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post #24 of 53
Quote:
Originally Posted by svthomas View Post

OHHH, this is quite interesting. I use HWinfo while I am gaming to record my VRM highs, just for later reference. I will keep it off while dealing with this issue, then.
Thanks for the info, will certainly use this command tonight.

Any news? biggrin.gif I'm looking to grab a second card. I just don't think one's cutting it for me. That and I want some future proofing.

I usually buy every other generation of cards. My last setup had a 5870, then another build was GTX 480's tongue.gif This was a good time to buy my 7970, I feel. smile.gif
post #25 of 53
I have stutter here too... wanted my 120hz 27" monitor to get its full usages... so I just added a second card - no stuttering on the single ...

... really not sure why I putting myself through this again ... even the 5970 had stutter issues ... understanding it's 2 gpus on one die.. just saying...

I'm starting to think it's the rest of my rig and I'm tempted to upgrade to a 3930 and pci 3.0 slots...

silly question but do you have 2 pci 16x slots ? my mobo makes me drop to 8x 8x ...

Does anyone know what cause the stutter? mad.gif
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post #26 of 53
Quote:
Originally Posted by wirefox View Post

I have stutter here too... wanted my 120hz 27" monitor to get its full usages... so I just added a second card - no stuttering on the single ...
... really not sure why I putting myself through this again ... even the 5970 had stutter issues ... understanding it's 2 gpus on one die.. just saying...
I'm starting to think it's the rest of my rig and I'm tempted to upgrade to a 3930 and pci 3.0 slots...
silly question but do you have 2 pci 16x slots ? my mobo makes me drop to 8x 8x ...
Does anyone know what cause the stutter? mad.gif

that wouldn't do anything. the issue is with how the software is handling it.. pretty much nothing you can do.
Edit: the only thing that would help is adding a 3rd card.

http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html
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post #27 of 53
Quote:
Originally Posted by theyedi View Post

that wouldn't do anything. the issue is with how the software is handling it.. pretty much nothing you can do.
Edit: the only thing that would help is adding a 3rd card.
http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html

It's a conspiracy to just make us buy another one!11!!!
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post #28 of 53
I have no stutter at all in BF3 with 2 7970's. Even cranking the AA up to 16xEQ and in eyefinity. I still don't get why some are having issues. Are you guys seeing the stutter in single or multiplayer? I see none in either.
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post #29 of 53
Quote:
Originally Posted by Hambone07si View Post

I have no stutter at all in BF3 with 2 7970's. Even cranking the AA up to 16xEQ and in eyefinity. I still don't get why some are having issues. Are you guys seeing the stutter in single or multiplayer? I see none in either.

I get it and it's smooth as butter on single monitor.

I also notice I have a weird transparent box that looks like tear at the mid section of monitor two and spans across to monitor three at the bottom of the screens. It's probably about an inch high, pretty weird.

It very well could be connection issues with the cable to the card. I might try switching them and and getting another active DP port for DVI instead of using the HDMI to DVI connection.
Edited by wireeater - 3/28/12 at 7:02am
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post #30 of 53
Thread Starter 
Alright, well I swapped out the cables, and am now using two mini-display to dvi and one straight dvi. Not convinced it helped.

Consensus: stutter is still there, it's a tiny bit better since the reinstall of OS and drivers (12.2 drivers) and cable swap, but it's certainly not as smooth as one card.

I would consider the performance of using two cards, in terms of stutter, about 75% as smooth as a single card, if I had to guess and put a number on it. I wouldn't consider anything under 85% acceptable, in my opinion. So I am just hoping this is all due to immature drivers and poor game optimization, and that it'll get better as drivers and software mature.

Only thing that I have found that has made the stuttering bearable is to lower the settings down to high, change a few to medium, keep MSAA off, and to keep vsync off. I get some tearing this way, but at least the high frames mask the stutter when I sweep from side-to-side, and it _appears_ to be just as smooth as a single card, at the expense of some tearing. So long as the frames stay around or above 100, I can live with it.

I can only speak for multi-player, I don't really play single-player in most games. I am playing 8x 8x, but iirc, this shouldn't matter too much.

Oh, before I forget: A frames limiter helps, but it also increases tearing. If I enable vsync to help with the tearing, it is certainly choppier than vsync with a single card. It's rather obvious when I look up at a straight, tall tower for example, an the sweep from side to side. I game very fast paced, often times quickscoping with a sniper or using some other single shot weapon, so any choppiness is quite a big deal.

In the end, these cards are certainly not performing on the level that I would expect two $560 cards to perform. If I am needing to make compromises in order to get optimal performance, these cards are not performing on flagship level, in my opinion. mad.gif

On another note, to keep me from obsessing over this issue, I flashed one of the BIOSes on each card to the unlocked ASUS one. smile.gif No more mucking around with xcl or unofficial overclocking to extend my clocks. band.gif
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