We've lost power recently and since our Ruckus switch and access point don't work properly. Both show healthy green connectivity lights. The connection speeds are slow, or non-existent. Our Centurylink WiFi works just fine.
Based on your description it seems like your switch (ICX 7150 switch) may be booting from the secondary partition (NOTE: Secondary partition contains the routing code) which is causing the bad connectivity issues. This could happen after multiple power outages, please follow up the next guide.
How to Fix Routing code issues on Lennar Home users via CLI
Note: if you have access to the Unleashed Dashboard and the Switch can be seen from there, it may look like the following image, ICX7150-C12-Router instead of ICX7150-C12-Switch, now before starting the steps of the guide, I will advise you to cable the computer directly to the Switch, since you will have a better connectivity than if you connect via wireless.
After fixing the issue of the Switch booting from the wrong partition, please perform an upgrade to the code 08095g UFI and upgrade both partitions primary and secondary with the switching code file named SPS08095gufi.bin, take into consideration that is the Switch is running a code lower than 08080 you need to upgrade twice, from the code you are to 08080f and then the recommended code 08095g UFI.
How to Upgrade a Switch ICX-7150-C12P using a USB flash drive