Linksys DMA2100 Performance Issues

[f5snopro]

I've recently been experiencing trouble when watching TV on my Linksys DMA2100 extender. My setup is as follows:

Mac Mini i5 8GB RAM, 128GB SSD w/ Windows 7 Media Center
4TB External Drive connected via Firewire 800 (Recorded TV Storage)
Gigabit Network
WD N900 Router w/ FastTrack QoS enabled
Linksys DMA2100 Extender

I experience freezing and the dreaded "Insufficient Bandwidth" messages when watching LiveTV or Recorded, with or without the Mac Mini idle. I swapped out my Linksys E3000 running DD-WRT thinking that might be the problem, going with the stock Western Digital N900. No luck. Borrowed an Xbox 360 S and tried it - same issue. I switched my NIC on the Mini to 100Mbps. Still nothing. I'm at a loss as to what the problem could be. Firewire 800 from the drive should be sufficient enough to watch a recorded show. Anyone have other suggestions of what the issue might be?

Thanks for your help!

[staknhalo]

Just to be that guy, the linksys is wired to the router as well, correct? You're not trying to use it over wireless?

[foxwood]

You don't state whether the DMA2100 is connected wirelessly or wired?

Assuming it's wired, have you tried testing it at another location? Do you have a HDMI monitor that you can hook it up to next to the router?

[f5snopro]

Sorry, it's wired. Cat 5e. I've tried it in two different wired locations in the house -- basement and bedroom.

[staknhalo]

And does it do the same with QoS disabled?

[f5snopro]

Yep. It's the same both ways. The old E3000 router didn't have it enabled, figured I'd give it a try on the new N900.

[staknhalo]

How do the wires look? No damage/fraying - specifically at the ends? The pairs all seem to be firmly in the RJ45 plug? Tried swapping the ethernet cabling out?

[f5snopro]

It looks like I finally figured out the issue. Bad driver on my media center (Mac Mini). Updated to the latest and greatest and tested for a few mins without issue. I'll exercise it over the weekend and see how it does!