Fix hangups and smoother playback by changing pci latency

frodo · 2005-07-12, 22:21

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....hreadid=121190

and here:
http://nolanparty.com/mediaportal.so...pic.php?t=7533

frodo

CHli · 2005-07-12, 22:24

I'll try this a i'll give you some feedback later

Thanks frodo

chook · 2005-07-20, 09:20

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

Sounds like just what I need!

Smirnuff · 2005-07-20, 10:03

Quote:

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

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.

chook · 2005-07-20, 11:04

Good point! thanks for that

murky123 · 2005-08-07, 16:13

that site needs to register

i tried a thousand times but it wont work

wortelsoft · 2005-08-07, 19:09

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.

Stinky · 2005-08-07, 19:49

I just downloaded a second ago, no problem.

mickb · 2005-08-26, 14:08

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

Thanks Mick

2005-08-31, 01:00

Quote:

Originally Posted by mickb

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

Thanks Mick

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.

2005-07-12, 22:21	#1 (permalink)
frodo Portal Developer Join Date: Apr 2004 Location: The Netherlands Age: 37 Posts: 1,516 Thanks: 3 Thanked 119 Times in 44 Posts Country: My System	Fix hangups and smoother playback by changing pci latency 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....hreadid=121190 and here: http://nolanparty.com/mediaportal.so...pic.php?t=7533 frodo

2005-07-12, 22:24	#2 (permalink)
CHli Portal Member Join Date: Jul 2005 Location: Switzerland Age: 27 Posts: 1,017 Thanks: 9 Thanked 3 Times in 3 Posts My System	I'll try this a i'll give you some feedback later Thanks frodo __________________ European TV + Radio Channels Logos, add yours !

2005-08-07, 16:13	#6 (permalink)
murky123 Portal Member Join Date: Feb 2005 Location: Alphen aan den Rijn (Holland) Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts	that site needs to register i tried a thousand times but it wont work __________________ AMD XP 1800, Asus A7V333, 512DDR, ATI radeon 9100 128MB tv-out, pvr-500mce, waveterminal 192m soundcard, mce2005 remote, XP sp2, MP 0.1.0.10

2005-08-26, 14:08	#9 (permalink)
mickb Portal Member Join Date: Jun 2005 Location: Dubai UAE Age: 50 Posts: 24 Thanks: 0 Thanked 0 Times in 0 Posts Country: My System	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 Thanks Mick __________________ AMD Athlon 2800+ CPU, 1G RAM, ASUS A7V880, Windows XP Pro SP2, .net 2, WD 200G HDD, DVICO FusionHDTV DVB-T, HDA Digital X Mystique 7.1 Sound Card, Leadtek Winfast 6600GT, Accent HT-400B case with Imon VFD, Pioneer DVR-107D DVD-RW DL

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2005-07-20, 09:20	#3 (permalink)
chook Portal Member Join Date: Jun 2005 Location: Sydney Australia Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Just a note that this tool does not support PCI-E at the moment :cry: Sounds like just what I need!

2005-07-20, 11:04	#5 (permalink)
chook Portal Member Join Date: Jun 2005 Location: Sydney Australia Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Good point! thanks for that

2005-08-07, 19:09	#7 (permalink)
wortelsoft Portal Member Join Date: May 2005 Location: Rotterdam, The Netherlands Age: 32 Posts: 374 Thanks: 1 Thanked 1 Time in 1 Post	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.

2005-08-07, 19:49	#8 (permalink)
Stinky Portal Member Join Date: May 2005 Posts: 27 Thanks: 0 Thanked 0 Times in 0 Posts	I just downloaded a second ago, no problem.