Cheaper NAS with Nvidia Sheild Pro Client or dearer NAS with direct HDMI?

[MyronAub 13]

I've now upgraded my home cinema equipment to 4K and Atmos and discovered my Emby server/client/network setup is struggling with 4K content. I have a home cinema at one end of the house, my media server in my office at the other end of the house and two NASs in a cupboard upstairs all connected by a convoluted hard-wired network with numerous switches and hubs in between.

Although there are a number of Emby clients spread throughout the house, 95% of content is watched in the home cinema so my thinking is to physically move a media server into the home cinema room meaning it is just one short cable away from the main AV amp.

In general would people recommend a NAS something like a TerraMaster F5-221 (Intel Dual 2.0GHz) feeding a Nvidia Shield Pro as client or a Qnap TS-653D (Intel Celeron Quad 2.0GHz) directly feeding the Amp via HDMI? Or is a Windows server the way to go, if so is directly via HDMI or via a Nvidia Shield Pro better?

For reference, it is extremely rare for there to be anything other a single stream from the media server and it's almost always feeding just the cinema room. For the foreseeable future I cannot envisage having to transcode 4K down to 1080p for other rooms/devices in the house as I already have 1080p versions of all my UHD discs.

Any thoughts or comments appreciated as I can't get my head around how a direct HDMI connection to a NAS/Windows server works in practice, does the server device have both server and client software on board and how do you control it (i.e. how do you choose a movie)?

[PenkethBoy 2068]

i would find out why your current setup cannot stream a 4k file - a Pi can do it and my ancient ts-412 can do it

maybe explain what struggling means

shield pro is def best client if the money is not a problem

[clarkss12 304]

You setup looks exactly like mine....... 

Beelink has created a media player/file sever, in a unique form factor,  that works very well connected to a TV..  As, I have gotten older, My Synology and WD NAS's have become more complicated to keep messing with.  I now subscribe to the KISS method (keep it simple stupid).  This device has two HDD bays that support up to 16TB each, for a total of 32TB of data and uses a very simple file server that JUST WORKS. 

Keep in mind that it is NOT a NAS,  just a simple file sever, (however, there is work for a Linux port that will enable a file NAS server capability), have not tested it yet........

This device was given to me by Beelink for review, but my opinion, is my own.