Have you confirmed from the devices you're testing from are definitely using 1.1.1.3 and 1.0.0.3 as the DNS servers?

Also wanted to point out that AI WLAN Optimization fails if I enable power optimization. I'm not sure which device(s) aren't supported for power optimization, but I definitely see failures in the log...

First and foremost, you'll need to use 1.1.1.3 and 1.0.0.3 as the DNS servers, as those are set up in Cloudflare to block malware/adult content. 1.1.1.1 will not block anything. Secondly, DNS is...

My EAP670's were upgraded last week to v1.0.6 through the Omada controller. Haven't had any issues (so far).

@MateuszMa - what is the signal strength/RSSI from the Wifi client you've been testing from? I have not personally observed channel width changing on any of the frequency bands once I have set them...

Also, make sure you enable OFDMA on BOTH 2.4/5Ghz radio bands for each EAP you have, if the option is available. OFDMA is proprietary to the qualcomm chipset and should improve performance.