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Thread: Is there something like Micro stutter that happens with one GPU?

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    Seriously casual gamer KeyboardDemon's Avatar
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    Is there something like Micro stutter that happens with one GPU?

    The way I understand it is Micro-stuttering is the issue that is caused when there are two cards working together to enhance performance and they encounter synchronisation errors leading to a 'stutter' while the card(s) resynch themselves. This is sometimes seen as dropped frames, a reduction in frame rates or frames trying to render too fast.

    I have a friend who is convinced that this can also happen with a single card, ie getting the exact same symptons but only have one card suggesting a different cause. If that's the case is this microstutter or is there another name for it?

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    Senior Moment blueball's Avatar
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    Re: Is there something like Micro stutter that happens with one GPU?

    Sounds more like a card struggling with a particularly complex scene.
    Rgds,

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    Re: Is there something like Micro stutter that happens with one GPU?

    I believe the 680 suffers from it, due to vsync issues

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    aka .:iGi:. Calcutter DannyM's Avatar
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    When you have more than one GPU they have to communicate with each other so there is usually a delay causing a very minute stutter that doesn't happen to often.

    If it's happening on a single card it could be a few different issues. Do you have the system specs? And what games does it happen on?

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    Seriously casual gamer KeyboardDemon's Avatar
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    Re: Is there something like Micro stutter that happens with one GPU?

    I don't have system specs, it's more that I'm trying to settle an argument, but I don't want to go into specific details in case I just end up extending the argument on to this site, suffice to say some people get very heated about such things.

    Ideally finding out what sort of issues there are that could lead a single card based PC look like it is stuttering would be enough for me to look up answers, hopefully without rattling any more cages.

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    Banhammer in peace PeterB kalniel's Avatar
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    Re: Is there something like Micro stutter that happens with one GPU?


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    Re: Is there something like Micro stutter that happens with one GPU?

    Now that's odd.
    Any ideas on cause ?
    Society's to blame,
    Or possibly Atari.

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    Banhammer in peace PeterB kalniel's Avatar
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    Re: Is there something like Micro stutter that happens with one GPU?

    It was a bug/unoptimised engine bit in the game - the graph highlights the 6950 but it was seen in nVidia cards as well to some extent. Can't remember the exact cause (or if they even explained it) but one of the game patches addressed it, think it was something to do with multiple animation textures with transparencies.

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    Re: Is there something like Micro stutter that happens with one GPU?

    Quote Originally Posted by kalniel View Post
    It was a bug/unoptimised engine bit in the game - the graph highlights the 6950 but it was seen in nVidia cards as well to some extent. Can't remember the exact cause (or if they even explained it) but one of the game patches addressed it, think it was something to do with multiple animation textures with transparencies.
    Yep! it's something that can happen on a solo card and is often casued by a bug in the game engine often related to AA_AF and how they try and do something after the Frame has been done. So try SS AA overrides to avoid issues with MS CS AA issues and vice verse. If a card does it in all games then it's normally something with a wrong driver or broken with rest of PC. The free Far Cry 2 benchmark can be useful to see if you have MS on a single card.

    Malware and AV software is often a culprit of the MS-frame lag stall issue on quite a few GPU's in a single setup and some soundcards.

    There is no issue with 680 if you have a 100HZ+ screen in regards to adaptive vysnc btw. Not in games I have tried.
    Last edited by DLUK; 12-05-2012 at 03:46 PM.

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    Re: Is there something like Micro stutter that happens with one GPU?

    Yep. It's just called stuttering. Still happens to me on my crappy GTX 460 when it switches clocks, which is when either the framerate plummets OR the game freezes and I have to reboot the PC. 9 times out of 10, if this happens on a single card, it's related to the power modes that the card switches between in game. DirectX9 or older games react the worst to this, because they usually do not put enough load on the GPU for it to run at full clocks, and especially Nvidia's graphics cards, cannot disable this crappy clock switching without flashing the BIOS on the card with different values.

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    Pork & Beans Powerup Phage's Avatar
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    Re: Is there something like Micro stutter that happens with one GPU?

    Quote Originally Posted by Scainer View Post
    I believe the 680 suffers from it, due to vsync issues
    Nvidia have fessed up to the Stutter issue with Vsync and hope to fix it soon.
    http://forums.nvidia.com/index.php?s...&#entry1407148
    Society's to blame,
    Or possibly Atari.

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    KeyboardDemon (16-05-2012)

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    Seriously casual gamer KeyboardDemon's Avatar
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    Re: Is there something like Micro stutter that happens with one GPU?

    Quote Originally Posted by Phage View Post
    Nvidia have fessed up to the Stutter issue with Vsync and hope to fix it soon.
    http://forums.nvidia.com/index.php?s...&#entry1407148
    [Sarcasm]OMG. Thanks a lot, way to wreck my argument.[/Sarcasm]

    Seriously though, thanks for that. Up until now I have always viewed stutter as an issue with two or more cards not synching with each other correctly, now it seems that it is actually an issue with VSync, whether this occurs with multiple cards or just one. It makes more sense then trying to create a new name for it, like jitters ie. my GPU has jittering issues!

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