Recently our home had several power outages due to a storm. After the power returned, I noticed the range of our Wifi has dropped drastically. After just around 10 feet away from the router, it loses all connection. I saw similar threads about this but the problem was not resolved.

I've tried everything. I did soft resets, changing channel, channel width... transmit power is high. I powered down the router and disconnected it for a minute and reconnected it. Still the same issue.

Lastly, I tried to do a full factory reset. After everything was set up again, still the same issue. Is this router just fried now? I had it plugged into a surge protector as well.

Internet connection through the wired connection on the router works just fine. But Wifi is really bad now.

Hardware is only 2 years old and firmware is updated to the latest.