I understand your point, but the power adapters are developed according to the device consumption requirments.

You can change the 2.4GHz band channel from the wireless settings when the Smart Connect is off. You can try different channels to see if tat will improve the wireless connection stability (for ex....

@SMatharu It seem that your issue is similar to this one. Try following Kevin's directions in that thread to narrow down the culprit.

Have you tested your internet speed recently ? Can you post a screenshot of OOKLA speed test.

What kind of UPS are you using (brand, model) ? Usually the router will work properly with the original power supply or one with the same parameters.

@GA_Polo Do you have any ISP device (router, modem, etc.) before the Archer C6 in your set up ? If you upgraded C6 FW recently try hard reset the device (method 1) and re-configure from scratch to...