network encoder stutters but ok on the encoder pc

[stryker]

I have sage 6.2 on the encoder pc and sage tv server (both windows).

The encoder pc has a pvr150 with a STB plugged into the coposit video.
The sagetv server has a pvr350 (I think) the dual digital tv tuner.

On the encoder pc if I run sagetv and watch the picture from the pvr150 it is fine.

However if on the encoder pc (which btw is my htpc in the living room) I run sagetv with the client param and pick a channel provided by the pvr150 the picture and sound immediatly stutters! However if I pick a channel provided by the pvr350 it is fine.

I've checked the cpu usage on both encoder and server and both are at/around 10%.

I've checked the network performance on both encoder and server and both are at/around 5%.

So, in summary, the encoder pc shows the pvr150 fine, both servers are fine for cpu and bandwidth.... the problem is when I run the encoder pc's copy of sageTV as the client.... then the picture and sound provided by encoder pc stutters.

I'm at a loss, anyone have any ideas?

Thanks in advance.