I do not believe that the Squeezebox, or any other streaming music player I am aware of, supports 5G WIFI (but I could be wrong). It's too new. It should work just fine on your 2.4Ghz network.
There could be many reasons for dropouts including weak WIFI service (too far from your WIFI access point), overcrowding on your network, too many 2.4 GHz networks competing for service (do you live in an apt.?) or maybe you just don't have your router/access point configured correctly.
There could be many reasons for dropouts including weak WIFI service (too far from your WIFI access point), overcrowding on your network, too many 2.4 GHz networks competing for service (do you live in an apt.?) or maybe you just don't have your router/access point configured correctly.