Frame rate OK, but frame rate seems to cycle

kjeezee · Sep 21, 2013

bit of a strange one this, I didn't even know how to google it...

my system is half decent, Windows 7, phenom II965 3.4 quad core, 16gb RAM @ 1333, SANDISK SSD system disk, RADEON 7870 2gb, viewsonic VX2453 LED 1080p monitor. using all latest drivers and updates including the signed monitor one just in case.

the frame rate is spot on, most things at highest resolution getting 40 FPS and above, GTA4 @ 1920 in highest is getting benchmarked at 44fps.. so OK, not mega, but well playable.

so, here's the problem, the game, while the frame rate is great and FRAPS gives solid figures, every second (and I mean like clockwork) the smoothness is interrupted.. I have attached a link to the a video which you can see what I mean (sort of)...

https://www.dropbox.com/s/3o5ijsd9jnttilk/GTAIV%202013-09-21%2014-27-57-09.divx

Anyone got any ideas where to start.....??

cpatel1987 · Sep 21, 2013

I'm thinking Software. I saw the video, and remember having a similar issue because of an antivirus I use to use. I'm not sure what your running, but exiting each piece of software either one by one or all at once and bringing each one back. I would of course start with whatever antivirus your using (curious to know which antivirus if you find out its that).

FYI, I found out it was webroot secureanywhere, BUT, only the firewall part of it.

JackNaylorPE · Sep 21, 2013

Please don't triple post

http://www.tomshardware.com/answers/id-1809918/frame-rate-frame-rate-cycle.html
http://www.tomshardware.com/answers/id-1809920/frame-rate-frame-rate-cycle.html

Monitor temps and voltages to see if you have any issue there.

Check Event Viewer for problems

Have you updated to latest drivers ? here's one of the original articles on the frame lag subject
http://techreport.com/review/23981/radeon-hd-7950-vs-geforce-gtx-660-ti-revisited/11

13.8 AND 13.8 drivers have dome much to address the problems.... not quite done yet but a definite improvement

Deus Gladiorum · Sep 21, 2013

kjeezee :

Hm, well what you're experiencing is known as stuttering, and in this case I'd guess it be microstuttering. Well it's possible that it's incompatible drivers which require a rollback but I doubt it. Your CPU shouldn't be bottlenecking you, and since you're only using 1 GPU it can't be a crossfire issue. One issue might actually be V-Sync. What I suggest you do is turn off V-Sync if it's not already off and see how it goes.

swifty_morgan · Sep 21, 2013

turn off all apps ( anti-virus/malware/skype/instant messaging, etc. )
also check games control panel and make adjustments to settings ( experiment )..............

your weakest link is the cpu. nothing you can do about that. even an amateur over clock probably wouldn't do much.

don't run fraps at the same time either.

if you don't want to jump to an intel build, look into a cpu upgrade. faster the better.............. check your board manufacturer site for cpu compatibility and what BIOS they use that supports that cpu.

forgot.................. don't run at 1900 res. lower it. what happens?

JackNaylorPE · Sep 21, 2013

I'm thinking frame latency rather than MS.

Micro stuttering is a term used in computing to describe a quality defect that manifests as irregular delays between frames rendered by the GPU(s), causing the instantaneous frame rate of the longest delay to be significantly lower than the frame rate reported by benchmarking applications, such as 3DMark, as they usually calculate the average frame rate over a longer time interval. In lower frame rates[note 1] when this effect may be apparent the moving video appears to stutter, resulting in a degraded gameplay experience in the case of a video game, even though the frame rate seems high enough[note 2] to provide a smooth experience. Single-GPU configurations do not suffer from this defect in most cases and can in some cases output a subjectively smoother video compared to a multi-GPU setup using the same video card model. Micro stuttering is inherent to multi-GPU configurations using alternate frame rendering (AFR), such as nVidia SLi and AMD CrossFireX but can also exist in certain cases in single-gpu systems.[

Deus Gladiorum · Sep 21, 2013

JackNaylorPE :

Frame latency and micro stuttering are the same thing. Micro stuttering has only taken on a multi-gpu setup connotation, but it is in fact just frame latency and can still be used to describe frame latency on a single GPU setup. Even the end of the excerpt you quoted said it's not a term exclusive to multi-GPU setups.

swifty_morgan · Sep 21, 2013

whenever i had trouble with 1 card it was 99% of the time some piece of software causing the problem or something not being installed.

something as simple as the amd hd hdmi driver has caused problems conflicting with on board. removing or disabling ( also disabling windows auto updates and auto driver updates ) so windows doesn't force it also helps.

which brings up something else. if you have windows update enabled........... everytime you start your machine, and all the while it's running, it constantly looks for updates. that may be a cause also.

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Frame rate OK, but frame rate seems to cycle

kjeezee

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cpatel1987

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JackNaylorPE

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Deus Gladiorum

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swifty_morgan

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JackNaylorPE

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Deus Gladiorum

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