Fix hangups and smoother playback by changing pci latency

Discussion in 'Tips and Tricks' started by Frodo, July 12, 2005.

  1. Frodo
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    Frodo Retired Team Member

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    Utility to set PCI Latency and possibly prevent game stutter
    or improve FPS and reduce live tv/movie stuttering.



    This tweak is an important one, and one well worth checking into. Apparently, newer high-end video cards hog PCI latency for no known reason. This makes other components wait for access and causes stutters and thus lower frame rates. If you adjust the latency this might benefit you, users are reporting big improvements.

    You can download this small utility program that allows you set your PCI latency. Adjust the PCI latency from for example 248 to 64, and there's a very good chance of stutter free performance & sound.

    STEP 1. open the pci latency tool
    STEP 2. Rightclick on your graphics card and click change setting(s)
    STEP 3. change to desired setting and hit ok
    Step 4. click settings and select apply at startup so it has a tick next to it
    STEP 5. click settings and select save so everything you have just done is saved
    STEP 6. right click on your video card and click quickset latency (if you want to set it straight away).

    http://downloads.guru3d.com/download.php?det=951

    more info here:
    http://forums.guru3d.com/showthread.php?&threadid=121190

    and here:
    http://nolanparty.com/mediaportal.sourceforge.net/phpBB2/viewtopic.php?t=7533


    frodo
     
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  3. CHli

    CHli Portal Pro

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    I'll try this a i'll give you some feedback later :) Thanks frodo
     
  4. chook

    chook Portal Member

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    Just a note that this tool does not support PCI-E at the moment :cry:

    Sounds like just what I need!
     
  5. Smirnuff

    Smirnuff Portal Pro

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    A PCI bus shares it bandwidth amongst all devices, hence the need for this tweak. PCI-E doesn't have the same restriction so even if you were able to change the latency it would have no noticable effect.
     
  6. chook

    chook Portal Member

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    Good point! thanks for that
     
  7. murky123

    murky123 Portal Member

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    that site needs to register

    i tried a thousand times but it wont work
     
  8. wortelsoft

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    Did you use the upper most link? I downloaded from that location about a week ago.

    Does gice a great performance boost on my system.
     
  9. Stinky

    Stinky Portal Member

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    I just downloaded a second ago, no problem.
     
  10. mickb

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    Show System Specs
    stutter in TV playback

    Great to see the feedback and advice offered to problems on the forums. I have installed the the M$ patches recommended by Frodo (which improved my TV playback) and have checked the PCI Latency, it was set to 32, but still have a problem with stuttering when watching live TV or recorded programs. No problems when playing Divx files.

    It is not as bad as it was before I loaded the M$ patches, but is probably the major fault I have had. It also seems to get worse the longer the HTPC is on.

    Any thoughts would be appreciated

    :D

    Thanks Mick
     
  11. spockware

    spockware Guest

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    Re: stutter in TV playback

    Your videocard might be overheating if it gets worse the longer the HTPC is on. Try running with the case cover off for the same amount of time to get good airflow.
     
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