Sorry .... My lovely wife tells me that quite often my "To the point" attitude comes off as rude & crude.
Let me give you an example:
A few months ago, I picked up a new customer that only has a server and 3 workstations in an accounting office.
Their network was doing some really weird, dumb stuff.
Sometimes it would work properly for weeks on end.
And sometimes it would crap out and do nothing!
Or work, not work, work, not work ..... (You get the picture)
After looking things over, I found that the previous "network" guy had set the whole thing up using the Homegroup config.
He had MANY shared folders on the server as well.
After a few hours of trying to fix what they had to prevent unwanted down time, I said "Screw it! Let's just do it right and be done with it."
The owner agreed.
So I moved all the shared folders into a common location on the server and set up a typical IPV4 network, then turned off the Homegroup junk.
That network hasn't had a hiccup since!
P.S. I've yet to tell that owner that the "other guy" also configured their new server with a RAID 0 setup.
Just made sure to get them on a backup routine immediately!
P.S.S. A typical $30-$50 router is eventually gonna give problems if you have more than 3-4 devices behind it.
Build yourself a pfSense box and your router problems will be gone forever! (Barring any hardware failure.)