AC5300 Nighthawk X8 AC5300 Tri-Band WiFi Router - lack of STP protocol support for SONOS

The issue is with the Linksys SE4008 network switch.  I powered all 15 SONOS players last night and this time only one is wired to the ethernet port.  I had no network issues at all this morning.  Linksys tech support confirmed the router lacks STP support.  The SONOS support forum had a long thread regarding STP and basically most switches are able to handle it.  There is a switch from NETGEAR that will work with SONOS and that is GS208 (8 port switch).....I am going to replace 3 of my Linksys switches that handle the bulk of the network traffic in my house with this switch....all the SONOS players will connect to the router via GS208 and that will enable me to wire more speakers to the wired network if I have to.