Airport Extreme DNS lookups stalling; creating page load delays

As of the last few days, maybe a week, I've noticed my Airport Extreme (the most recent version, tall squarish one) has been getting slow at random times. Nothing on the network locally would be causing it. The slowness appears to be in DNS lookups... you know, that bit the browser does behind the scenes to turn google.com into 173.194.37.4. At first I thought it was just a slow DNS server setup we had configured in the Airport (8.8.8.8 and 8.8.4.4) but I've switched them to something that performs a bit better (if you can call 12 ms vs 14 ms lookups, "better", lol).
The issue manifests itself over wired and wireless computers connected to the Airport.
We also have a airport express (the short squarish one, newest model) that is setup for the purposes of creating a roaming network. Another thought was maybe it flipped over to try to issue IPs, so I looked to ensure it was on the proper settings, and it is.
The software on the airport management client (in windows) and the airport extreme + express are updated. I have already tried to reset them from scratch and reconfigure, to no avail.
Interestingly, what leads me to believe it's related to DNS Lookups is, when I am experiencing the issue, if I download a file - say a really large file, just to test, the download speed is as it should be from my ISP. But if you try to browse to any ole page, apple.com, google.com, arstechnica.com, or sites that are generally really quick, like msn.com or wsj.com, it would be faster to tap it out in stone.
We're experiencing this on a interesting set of devices, Windows 7 and 8 computers, an iPad, a Android tablet, android phone, iPhone, and a Windows phone.
Does anyone have any suggestions? I've found a few older threads with similar issues, but they are outdated and/or seem to chalk it up to a bug and Apple needs to fix via update. This is just super frustrating.

Hi tbonecopper,
If you feel you are having DNS-related slowness on your Airport Extreme, you may find the following article helpful (it is written with a computer focus, but the same principles should also apply at the router):
Non-responsive DNS server or invalid DNS configuration can cause long delay before webpages load
http://support.apple.com/kb/ts2296
Regards,
- Brenden

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Message was edited by: Carolyn Samit

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Firmware Version: Broadcom BCM43xx 1.0 (5.10.91.27)
Locale: FCC
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Message was edited by: shawk
Message was edited by: shawk

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adrian,
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Airport Extreme DNS lookups stalling; creating page load delays

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