how come my Linksys mesh system that’s 5 years old is faster than my Ruckus wifi in my Lennar smart home built in Nov 2020? Even the router Comcast gave me that’s in my upstairs closet is faster. I have the fastest speed offered by Comcast. Would like to get rid of everything and just use Ruckus but the speed sucks and has never been good or consistent. Could I have defective units? Please help.