Chromecase Drops Wifi when display setting changed to 4K

[Xavore]

Hello everyone,

I've encountered an issue with my Chromecast and was hoping someone could offer some assistance.

When I attempt to change the display settings to 4K from 1080p on my TV, it immediately loses connection to the WiFi. Note, the change to 4K otherwise appears to work. 

However, when I revert back to 1080p, the internet connection resumes without any issues, and the signal remains excellent when I am in 1080p.

I'm reaching out to see if anyone has encountered a similar issue or if there's a solution that would allow me to use the 4K settings successfully.

Thank you in advance for your help.

Kind regards,
Xavore

[Kimy]

Hi Xavore,

Thanks for posting here in the Google Nest Community. I find this situation quite bizarre. Rendering might affect the quality of the video or sound, and it might even stutter or freeze if there’s difficulty with the bandwidth, but I've never heard of connectivity interruptions.

Let’s isolate it to know if it's network-related by disconnecting your Chromecast device from your Wi-Fi and connecting it to another network. You can use your phone’s mobile hotspot if there’s no other network available. Let us know how it goes.

We look forward to your response.

Thanks,

Kimy

[Xavore]

Hello Kimy, 

Thank you for your reply. I was also baffled by the issue and did not expect it to be 100% reproducable, but it has been. 

Good suggestion trying a different network. It had a little trouble, but seemed to establish a connection with my mobile's hotspot while display was set to 4K. I was able to start a show etc. 

Are there any settings etc. I should check with my router to see where the issue might be?

Kind regards, 

Xavore

[Kimy]

Hello Xavore,

Thanks for the reply. Now that we’ve determined that this has something to do with the network/router, we can focus on troubleshooting that. Start with a simple reboot; if possible, try a sequential reboot on each of the involved devices. It helps refresh the communication between devices. Some users perform factory resets on their routers, but I don’t suggest it, especially if the user is not really familiar with it. It’s best to contact your router manufacturer or ISP (if they provided your router) if it persists.

I hope this helps. Let us know if you still have questions.

Regards,

Kimy

[Xavore]

Hello Kimy, 

Thank you again for your assistance. 

Unfortunately, resetting the router and other devices has not resolved the issue. 

I will look into the router and see what might be the issue there. 

Kind regards, 

Xavore

[Xavore]

Changing to 5Ghz fixed the issue - but I am not sure why it was not working on 2.4Ghz. 

Thank you again for your assistance. 

[Kimy]

Hi Xavore,

Thanks for keeping us in the loop. I’m glad that you finally sorted this out. This may indeed have something to do with your router configuration. I suggest you search online using your router's make and model for further details.

Feel free to create a new thread if you have questions or concerns in the future.

Thanks,

Kimy