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Your Chromecast May Be Killing Your Wi-Fi

Dave Parrack 16-01-2018

If you have noticed your Wi-Fi struggling recently, you may have cause to blame Google. Reports suggest that Google devices with the Cast feature, such as Google Home and Chromecast, can mess with your wireless connection. Google is working on a solution, but there’s no instant fix.


Most people reading this will have the luxury of a permanent internet connection in their home. It’s great when it works, but when it goes down it’s annoying and frustrating in equal measure. And we now know another possible reason why your Wi-Fi connection may be faltering Why Is My Wi-Fi So Slow? Here's How to Fix It Need to download data fast, but have slow Wi-Fi? Why is this happening? Here's how to fix a slow Wi-Fi connection and speed it up. Read More at times.

Google Messes With Your Wi-Fi

Essentially, Google devices offering the Cast feature may be temporarily messing with your internet connection when awakened from their Sleep state. As reported by Android Police, this was first noticed by people using the Google Home Max and the TP-Link Archer C7 router.

However, the Chromecast and a range of other routers including ones by ASUS, Linksys, Netgear, and Synology are also being affected. And while TP-Link has released new firmware for the Archer C7 which eradicates the problem, users of the other routers are still being affected.

According to TP-Link, the cause of this problem is the aforementioned Cast feature, which sends “MDNS multicast discovery packets” in order to maintain a live connection. While these are normally sent every 20 seconds, when a device is awakened from Sleep a large amount of packets can be sent in a very short space of time. And this can interrupt your router’s ability to function.


A Trio of Temporary Solutions

Google has stated, “We’re aware that a small number of users are having issues and our team is working quickly to share a solution.” In the meantime, you can either disconnect your Google Cast device, reboot your router 10 Ways to Improve the Speed of Your Current Router Internet connection too slow? Here are a few simple router tweaks that could make a world of difference on your home Wi-Fi network. Read More , or download your router’s latest firmware update (if there is one).

Do you own a Google Home or Google Chromecast? If so, have you noticed it messing with your Wi-Fi? Even if you haven’t noticed a problem, will you be installing the firmware update for your router at your earliest convenience? Please let us know in the comments below!

Image Credit: @iannnnn via Flickr

Related topics: Chromecast, Google, Google Home, Wi-Fi.

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  1. Luc
    January 24, 2018 at 12:01 pm

    Is this limited to Google Chromecast? or does this behavior extend to devices like the Roku also?

  2. Mike
    January 23, 2018 at 1:29 pm

    Yes I have had problems lately too. Google needs to fix this problem asap