Airport extreme wifi in the single digits

[frodotheturtle]

Came home from college for break to discover my family's wifi router has degraded in performance. Ethernet is still pulling the full 110MB/s that we used to get but i can barely get 1MB/s out of the 2.4ghz wifi. ive tried changing network name to make sure no devices were sucking up the connection, and changing the channel to a less congested one, but the problem persists. I tried the 5ghz channel and that is getting 10MB/s with just my one device. I cant play games and im desperate... help...

 

edit: for clarity when i changed the name i ran a speed test with just my phone connected and it was still at just under 3MB/s. Im sure i was the only device on the network as that is what airport utility was saying at the time.