Slow internet speed from wifi - less than 30Mbps with 300Mbps subscription

[awwrohn]

Since yesterday morning the internet download speed over wifi has decreased significantly. Currently it is between 10-30Mbps while I have the 300Mbps subscription.

I tried via cable and with the cable it is working well and I measured around 290Mbps.

I also turned off and on and after that did a reset on the Connectbox but still the same slow speed via wifi.

Could it be that my Connextbox has some hardware issue again? I had a problem earlier this year and my Connextbox was replaced during the summer, since then the wifi worked well, but since yesterday it has become very slow.

What would you suggest?

[Bert · Accepted solution]

Do the 2.4 and 5 GHz have the same name?

It looks like your device is connecting to the 2.4 GHz.

Can you give them different names and then connect to the 5 GHz WiFi transmitter?

[awwrohn]

Thank you  @Bert I disabled the 2.4GHz frequency and renamed the 5Ghz one -> now the internet speed is fast again. Thanks for the prompt help!