Ralink RTL8192EU on Buster

[George E Sollish <gsollish@autogear.net>]

I have a new amd64 install running Buster (10.3).  After much 
tail-chasing, my TP-Link TL-WN823N USB adapter (Ralink 8192EU chip) is 
recognized and active, but at a very low throughput --- 1 Mb/s is 
shown.  Has anyone had more success?  The latest driver on github 
doesn't compile on my 10.3.

Thanks.

George