Minor browser hiccups, especially when playing flash movies

[chawknz]

Hi all. My issue is very minor, although it's sort of annoying. I do not know if it's limited to my "Hackintosh" or if it's an OS X issue. I can say that I do not have this problem on my MBP.

 

After using Firefox or Safari for a period of time, I start to notice that the browser will freeze for a moment or two (sometimes longer, sometimes less) especially while watching YouTube videos. If I close the browser and restart it, everything is fine for awhile and then it starts to have the issue again. The longer I go without a browser restart, the more pronounced the freezing gets.

 

While running TOP, I see that the browser causes the CPU to spike rather high during these times. I thought it may have been a Firefox issue, so I switched over to Safari for awhile but started to experience the same issues, although not as bad as Firefox.

 

I am using the latest versions of Safari, Firefox, and Flash. Has anyone else experienced these hiccups? My system specs are in the signature. Any ideas would be appreciated. I realize this isn't a huge issue, but the OCD in me is going nuts over it.