[cscoppa]

1080P Streams even some High Bit rate Bluray Streams 25Mbps stream fine from the PC to my WD live and now my Shield.
I just started getting into 4K as of Yesterday. I borrowed some 4K content from a buddy.

What type of 4K content is it ? Have you seen the 4K demos available in the Wiki ?

Doesn't matter... it is 4k 2160P content. As per my PC and VLC media player, so I can confirm it is 4K.
All I know is that I was also able to stream it across my network from my Shield with no issues either.
I played with other content my buddy lent me and messed around with it. it's all 4K 2160p, one supports UHD as well.

What I am looking for is tweaks, suggestions. Also perhaps a sure Fire way to create a bigger buffer on the Shield end, just so I don't run into buffer / Lag issues as the content gets higher and higher in bitrate.

No I have not seen the wiki content.. I will check it out.. Thanks (edit: can't find which Wiki your talking about?)

If you do run into any buffering issues, you can try some advancedsettings.xml tweaks. This is a good starting point and you can tweak from there:

https://github.com/koying/SPMC/wiki/Adva...k-Settings