I've tried many, many combinations of wireless connection properties in an attempt to reduce or eliminate picture breakup. I've been experiencing picture breakup for around 3 seconds every 10 to 20 seconds.
I'm using a Dell E1505 notebook running Windows Vista and a Dell 1500 802.11a/b/g/n wireless card. I don't believe this issue or fix is particular to this card. It may effect other cards supporting 802.11a. This issue also effects 802.11g performance using the same wireless mini-PCI card so it's not a 802.11n issue.
The fix greatly reduces the breakup duration from 2 to 3 seconds to a split second. The number of breakups doesn't seem to be reduced, only the duration of the breakup.
The fix is to change the property named "Disabled Bands" from "None" to "802.11a". This disables 802.11a on the wireless adapter.
The difference is significant in that wireless viewing is now mostly good. Remaining questions are:
1. Why does changing this property makes any difference?
2. What is causing the data rate dips?
3. Does this effect all applications or only HDHomeRun or only UDP?
I will move to another location next week which should clarify whether this is an interference issue.
You can see the improvement caused by the property change by viewing the two attached jpegs. The important difference is the depth and duration of signal loss as shown by the two Windows Task Manager network connection graphs.