Playback Freezes / DVR Disconnects

So, over the last several days we have been receiving the error that our HD DVR (HR34-700) is disconnected and any playback will stop.  This problem had been intermittent and occurs on all receivers (H25-500).  The newest problem is now the pausing of a playback.  The playback will freeze every 30 seconds or so, lasting a second or two, until it ultimately stops playing altogether.

What other equipment do we have?  We have the Genie Go

So what has changed?  Well, our internet router died completely and we replaced it more than 2 weeks ago.  For the first week everything was just fine. 

What have I done to try to fix this?

1. Replaced the cable on the coax/ethernet bridge (have also set a continuous ping and no loss of connection has been seen)

2. Changed the port on the switch that the coax/ethernet bridge was plugged in to

3. Plugged an ethernet cable into the HD DVR

4. Rebooted and reset all receivers

5. Run the HD smart test and surface test

No issues have been found and nothing has fixed the issue

So here are my questions:

1.  My Wireless router is also connected to the Coax network, should I disconnect and only have the Directv Coax Bridge connected?

2.  Should I plug or unplug the ethernet cable into the HD DVR?

3.  Does port forwarding need to be configured for all receivers or just the Genie?  Currently, all receivers have ports open.

4.  Should I just ask for a new HD DVR?

Thanks for any help anyone can offer.