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Level 1

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Periodic lag experienced in graphics-intensive application

This lag is debilitating. So far I have only experienced it on the Windows 7 (64 bit) side of my Bootcamp partition, but I have not attempted to run such applications in the OSX side.

The Problem: About every 5.1 to 5.2 seconds, the framerate drops to a standstill. As this happens over and over again, the duration of the stutter increases until after about an hour it is equal parts smooth and lagged. Despite the increased duration, the periodicity remains between 5.1 and 5.2 seconds by my stopwatch. Eventually, the lag becomes so great that the applications become unusable.

I have found this problem in the following applications:

TERA Online

Guild Wars2

Star Wars The Old Republic

I have also found forum discussions citing the same symptoms in Diablo 3, although I have not played or installed that game on my own system.

This appears to be a common problem across all these graphics-intensive games specifically centered around the iMac. This is why I am bringing this up to the Apple community. Has anyone else seen this phenomenon? Is there a solution? I did just update the Radeon HD 4850 graphics drivers. Could that have something to do with it?

iMac (27-inch Late 2009), Windows 7

Posted on Jun 9, 2012 3:57 PM

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The hatter

Level 9

60,990 points

Posted on Jun 9, 2012 4:08 PM

update your graphic driver there are bookmarks and more here and try that

use something like AIDA64 Extreme to monitor fans, temps, gpu and memory

clean up your registry and system with CCleaner and Driver Sweeper 3.2

All of those are here and Google or from Cnet and Softpedia.

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17 replies

cmtulo Author

Level 1

0 points

Sep 4, 2012 11:51 PM in response to J. Night

Very interesting. Mouse drivers was not something I would have ever thought of. I hope other people having the same issue read this and try it out as well. If anyone does, could you please confirm that it does or does not resolve the issue for you?

J. Night

Level 1

10 points

Sep 5, 2012 1:06 PM in response to cmtulo

alright so after rebooting and gaming again for a bit, the lag occured but it wasn't as severe as it used to be with the drivers installed. i did manage to fix it though.. without doing anything other than unplugging the mouse and replugging it in. very weird..

Periodic lag experienced in graphics-intensive application