I dragged out an old Windows 7 machine (NET VIEW worked) - and "net use * \\<my share name here>" gives an error 53. I checked another couple of Windows 10 machines in the house, and my unupdated...

@IrvSp Windows 10 - latest updates. Router GUI says the drive is there (Yes, 4 TB) CMD prompt NET VIEW gives an error 53, yet Drive is healthy, and like I said, it worked ONCE. But not since. I tried...

USB Share of a 4GB drive worked all of ONCE, and not since... By the way, FTP works OK... Has anyone gotten this to function?

@RogerJT The AC50 (AX3000) has caused a dramatic and immediate improvement. The root of my issues with the AX1500 was just too many connections made in my home (Smart Devices) - but the WiFi signal...

Removing devices from the AX1500 WiFi made it "better", but didn't cure the issue. Now I'm trying an Archer AC50 (AX3000). Immediately there's an improvement in WiFi strength and connections seem...

I'd suggest adding a cheap gigabit 4-port switch in between the AX3000 and your devices. That said, those entries should cause a crash...