Micro stuttering - disable core parking

[Scougar]

Turning off HPET completely screws up Black Ops for me - granted it a game issue rather than a system one - but be warned anyone using APIC timer over HPET your likely to get guns "jamming" constantly due to timing issues in the game.

Also I found that 2 out of 3 PCs run into stability issues with CPU parking disabled (even non-overclocked and systems that pass stress tests with CPU parking disabled), so if you get applications unexpectedly crashing after changing that setting thats likely to be the cause.

Can you describe anything further about these systems? Is EIST and C1E disabled on these setups?

Obviously not a good effect in Black Ops!

Just annoying that something that is meant to bring greater accuracy, can potentially ruin the experience.

 

[CUDA]

Is this a permanent change ? Or does it have to be turned back on when games are not being played ?

i.e. Only disable core parking when gaming ?

 

[RavenXXX2]

Can confirm problems with OPS, it was like major lag and then it just completely hangs. Reverted back.

 

[Rroff]

Can you describe anything further about these systems? Is EIST and C1E disabled on these setups?

All were core 2 based, haven't tried it on i7 or AMD. EIST/C1E would have been disabled on any of the overclocked ones but enabled on the stock ones.

I've been trying quite a lot of stuff recently trying to get black ops working properly for myself and a couple of friends, CPU parking and HPET settings were one of the potential fixes brought up that I tried which is why I have some experience with this over several systems.

 

[Sh4rkie]

Can confirm problems with OPS, it was like major lag and then it just completely hangs. Reverted back.

Can you try BOP's with Vsync disabled? Mine is Vsync disabled with the core parking disabled and plays perfectly.

 

[Rroff]

VSync has always been disabled every time I've tried it with black ops - no way I'd use VSync in an fps game heh.

 

[Martini1991]

Different kind of stuttering at a guess. Things like, I dunno for me Just cause 2, no idea why but with vsync enabled, stand perfectly still I'm rock solid 60fps, generally move in one direction, solid fps, turn a tiny amount of turn around completely and it jerks down to low 20's and slowly (over a couple seconds) gets back to 60fps.

If I disabled vsync it doesn't do this and stays maxed out around 100-120fps no matter what I'm doing. I assume its to do with for no apparent reason maybe another minor thread being run and thinking it can run it on the same core, so for no reason the thread is moved to the next core and you get a minute, tiny little bit of lag. Without vsync and cpu normally far higher workload it probably doesn't get told theres a bit of time for something else to be pushed through that core.

So thats more lag/stuttering, micro stutter usually refers to the uneven output by gpu's in crossfire.Different reason but I guess can have the same actual effect in game.

JC2 Vsync triple buffers some areas, caps it to 30 FPS.

 

[arc@css]

If you look at the link kitch9 put up (and the full link of it from me), you will see there is a measurement tool for latency. That might be useful for you arc

Also.. try closing CCC.EXE and MOM.EXE before running games to check for improvements

Thanks.

 

[Scougar]

Thanks.

I'm literally just picking that info out of that thread, just passing the info on

 

[RavenXXX2]

Can you try BOP's with Vsync disabled? Mine is Vsync disabled with the core parking disabled and plays perfectly.

Yeah I had Vsync on so I disabled it, disabled CP again and it now works fine.

 

[Sh4rkie]

Yeah I had Vsync on so I disabled it, disabled CP again and it now works fine.

Woohoo