ICX7150-C12 & R510 Access Point Wi-Fi speeds with AT&T 1Gb Service

[steved1951]

I purchased a Lennar home in July of 2019 where Amazon installed the Smart Home components, including a Ruckus ICX7150-C12 Switch and two R510 Access Points. AT&T provides the Internet service with a 1Gb fiber connection to the house. I have never been able to get more than 450Mb download speeds from the Wi-Fi connections, which are the only way to get service as Lennar did not install any accessible Ethernet connectors in the house.

I have lost the ability to connect to either the R510's (the Ruckus Unleashed app does not work) and I cannot access the IPX7150 switch as none of the Username/Password conventions specified in one of the forums work.

Are there newer versions of hardware or software which can improve the download speeds? Or is there another setup option, i.e., other hardware alternatives, that would work better?