Chromecast TV - Frequent WiFi Client disconnection

Chromecast TV - Frequent WiFi Client disconnection

Chromecast TV - Frequent WiFi Client disconnection
Chromecast TV - Frequent WiFi Client disconnection
5 hours ago
Model: Deco XE75  
Hardware Version:
Firmware Version: 1.3.0 Build 20250722

My Chromecast TV (Google TV) is frequently dropping from the network. The disconnects are confirmed via the device UI and the Deco app (client shows as "Offline"). This behavior started immediately after migrating from a Nest WiFi Pro setup to a TP-Link Deco mesh. Other stationary clients (LG TV) on the same node remain stable.

 

 

Troubleshooting Performed:

  1. Static IP/DHCP: Suspected a conflict due to frequent IP changes. Assigned a DHCP Reservation in the Deco app. Issue persists.

  2. Connection Preferences: Locked the Chromecast to the Main Deco (physically closest).

    • Tested Preferred Band: 5GHz, then reverted to Auto. No improvement.

  3. DNS Isolation: Disabled Pi-hole to rule out blocking/timeout issues; disconnects continued.

  4. Comparative Analysis: An LG TV in a similar location remains connected 100% of the time with Connection Alerts enabled.

 

Observations & Questions:

  • DHCP Lease Time: I’ve noticed frequent renewals. Is there a way to modify the DHCP lease duration in the Deco UI/App? Options seem very limited.

  • Logs: Is there a way to access the raw system or WiFi interface logs (syslog) for the Deco units to see the deauthentication reason codes?

  • Compatibility: Are there known issues with Chromecast and Deco? Power Saving, Fast Roaming etc? I know some older IoT devices used to run into this issue. Is there some way to confirm this with specific models of Chromecast? BTW I didn't run into this issue with my Nest WiFi Pro

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Re:Chromecast TV - Frequent WiFi Client disconnection
5 hours ago

Hi  @bo01ean 

 

Welcome to the community! 

 

Sounds like you've already done a fair bit of legwork trying to pinpoint why your Chromecast is persisting in this behavior.

 

If you haven't already, I'd recommend turning off Mesh Technology for the Chromecast via the Deco app. You should be able to find it by selecting the Chromecast from the Client List in your Deco app, then scrolling down to "Mesh Technology," tapping it, and toggling it off (if it isn't already).

 

By the way, is your Deco network using the same SSID and password as your previous Wi-Fi setup (Nest)? If so, you may want to reset the Chromecast's Wi-Fi network settings, or, in the Chromecast network settings, have it "forget" the Wi-Fi network and reconnect to it.

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