You have too much network bandwidth!!

I need to learn how to configure my router and modem for best streaming. 

@erik_squires 

With a stereo 196 kHz/32 bit audio signal it uses about 1.5 Mbits/second of bandwidth

A standard CD playing stereo at 16 bits and 44.kHz outputs 1.4 Million bits per second.  An uncompressed stream with twice the bits and four times the frequency requires 8 times the bandwidth, or over 11 Million bits per second.

That is the raw data bit rate - there are substantial overheads for packet switched networks like the internet and Ethernet because the packets are encapsulated in headers and footers. 

Even more overheads are incurred if much error correction is required.

Something is not adding up!  Are you sure you are not reporting bytes per second, which is 8 times more than bits per second?  And on your numbers a Gigabit connection might at face value support 700 streams, not 70?

what’s the minimum for two tvs simultaneously streaming video with multi-track audio?

@cleeds 
Of course that depends to an extent on the amount of compression applied to the FLAC file

That is objectively true, but on a typical modern CPU or streaming device, the time taken to decode a level 8 FLAC file (highest level) can be considered to be negligible and often falls within milliseconds.

I think the next step is to use a GPU integrated with a CPU to do decoding once the price of them comes down significantly. That would eliminate the latency from the CPU to pass data to the GPU.    Apple is already doing something similar with the M-chip line which makes them ideal CPUs for AI.

I cannot see the point of this post Eric. Maybe you're bored? Even the 'standard' 1GbE connection is well over specified for all our purposes, so what the title of this post is supposed to mean is beyond me, except to just attract attention!

Go and listen to some music is my recommendation.