The Half-Life 2 Stuttering Problem

Valve Working on Stutter Fix; Test Version Released

Sat, 25 Feb 2006 14:44:25 GMT

Some significant news on the stuttering front... A reader sent in a link to a Valve post on the Steam Users Forums that contains details of an upcoming stuttering fix being worked on by Valve. Here's an excerpt:

A fix for the stuttering problem is currently in development on Steam Beta.

If you have experienced this problem in the past and would like to test the updates on Steam Beta, please follow the instructions below to start Steam Beta and run through a scenario that would previously stutter for you in and see if that problem still occurs.

Early reports are not universally positive but some are reporting significant improvement. Valve is requesting feedback on this patch which can be submitted at the Developers Wiki.

Stuttering Poll

Thu, 27 Jan 2005 12:44:10 GMT

In an effort to determine how many are still experiencing stuttering, a Half-Life 2 user has put up a poll allowing people to vote on the matter. While certainly not scientifically accurate, the results are nonetheless interesting. You can vote here:

http://soulcake.freestarthost.com/poll.htm

It's Back With A Vengeance

Tue, 18 Jan 2005 13:15:50 GMT

Just when I thought that my stuttering ills had been mostly cured, they're back and then some. I recently upgraded my sound card from a Sound Blaster Audigy 2 Platinum eX to a Sound Blaster Audigy 4 Pro. The sound card works beautifully in all my games and audio apps with the exception of Half-Life 2 where I now experience extreme stuttering as well as distorted and corrupted sound effects followed by a complete system freeze within minutes of starting a new game. This distortion is accompanied by missing buttons and UI elements in Half-Life 2's menus forcing me to quit by bringing up the console.

This is the same widely reported problem that I previously fixed by adjusting my PCI Latency Timer BIOS setting which no longer has any affect on this issue. I can rarely make it out of the train station on the first level before my system is totally frozen.

After spending hours troubleshooting this problem, the only cure I've found is to disable anti-aliasing, which considering my system specs is entirely unacceptable. The recently released ATI CATALYST 5.1 drivers made no difference.

Patch Improvements Revisited

Wed, 12 Jan 2005 01:12:10 GMT

I have solved my crashing problem by lowering my PCI Latency Timer BIOS setting to 32 from its default of 64. Since doing this I have been able to appreciate the improvements in the most recent patch.

This patch has made a significant improvement in the stuttering issue affecting my system. While a few hitches remain, the game is completely enjoyable now in the areas that I have seen so far. I achieved the best results by setting mat_forcemanagedtextureintohardware to 0.

I will continue to post updates as I progress through the game and receive additional feedback from the community.

New Patch Results

Tue, 11 Jan 2005 13:27:24 GMT

Well, I spoke too soon. While the game seems to have less hitching than before, I am now experiencing complete system freezes with looping sounds at certain points in the game.

My system is 100% stable and flawlessly passes extended runs of the Prime95 torture test and Memtest86. My system is not overclocked and I have great temps on the components in my system. I have absolutely no problems running Unreal Tournament 2004, FarCry, DOOM 3, Painkiller and World of Warcraft among many other games that I own.

My gut tells me that this is a driver problem triggered by something that the Source engine is doing. In Windows NT based OSes, it is impossible for a user mode process to directly cause a total system freeze. However, a user mode process can certainly trigger a bug in kernel mode processes like drivers which can lead to a system freeze. I am going to continue looking into this.