SOLUTION (somewhat pricey - but cheaper than Sonos speakers): After
trying a myriad of possible solutions from many sources unsuccessfully,
I finally upgraded my old Netgear Orbi mesh router (RBR50) to an Orbi
RBK753S (WiFi6 mesh)at Costco (I chose C...
I, too, have a JBL Link Portable (2 of the, in fact). I also have 4
other mixed-brand speakers that connect via Chromecast Audio. All play
fine via C.A. if I play them individually. When I attempt to play all 6
together in a group, however, much of t...