I Just removed everything apart from the steam cache settings and im not having any trouble.
Its working very well.
I am running Ubuntu Desktop 18.04 on a Hyper-v server.
My observation is it likes CPU cores, ive given mine 12 threads just for a laugh and utilization is still around 50% when a client is receiving cached content.
Transfer speeds are around 70 to 80megs a second. Making my poor 2600k sweat alot haha.
Server is a Dell Poweredge T420, 64gig of ram and 2 xeon E5-2440 cpu's with 8 15k SAS drives in Raid 5.
Dumb question, im assuming you need to have multiple DNS IPs for each service on the client end?
e.g first dns .50 for steam
then .51 for Origin?
