Ramses von Deweh Feb 3 @ 2:44pm
Consistent FPS MicroStutter
Now, I know plenty of topics on this exist already, but I'd like to voice my issue as well.

Yesterday, I was playing L4D2 with a friend, and I happened to notice that my game was consistently "stuttering:" that is, it gets consistently high (around 60-70) FPS, but once every 1-2 seconds, the framerate drops to about 20 for, what seems like, half a second. Then it goes back to normal, and repeats for as long as a play.

The issue persists from boot-up to shut-down, occurs in single-player, local multi-player, and on servers. It also, for whatever reason, happens in the main menu. This issue does not cross over into other non-Valve games, (but I haven't tried with other official Valve games.)

What I've tried:

1: Turning off VSync. No help.

2: Turning off Multi-Core Rendering. No help.

3: Lowering overall graphics settings. No help.

4: Disabling AA. No help.

5: Setting Paged-Pool Memory ti "Low." No help.

This issue started yesterday, and has persisted on to today. I have not had an issue like this until now. I'm no software engineer, so put everything in English and in layman's terms, if you'd please.

Any help would be much appreciated.
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quaixor Feb 16 @ 8:41pm 
I noticed this issue too. It started a week or two back as well. The game plays fine but every few minutes all the zombie and character animations would freeze for about 1/2 of a second, and when they unfreeze the zombies have teleported a few feet. I'm playing on a 120hz monitor running at 250-300 fps, so this is very noticeable. I recently upgraded to 14.1 beta ATI drivers which installed hydravision, so that's another possible cause.
Dharok The Wretched Feb 16 @ 9:20pm 
Originally posted by quaixor:
I noticed this issue too. It started a week or two back as well. The game plays fine but every few minutes all the zombie and character animations would freeze for about 1/2 of a second, and when they unfreeze the zombies have teleported a few feet. I'm playing on a 120hz monitor running at 250-300 fps, so this is very noticeable. I recently upgraded to 14.1 beta ATI drivers which installed hydravision, so that's another possible cause.
I thought in cases like this, it helped to cap with V-Sync?
I may be(am probably)wrong.
quaixor Feb 16 @ 9:43pm 
I tried both vsync on and vsync off. Can't really tell the difference at such high fps. I figure I'd reduce the input lag by playing without vsync.
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Date Posted: Feb 3 @ 2:44pm
Posts: 3