Hello  @Angel_Camacho ,

Thanks for contacting our community.

Here are some troubleshooting steps you can try to resolve an unstable internet connection or intermittent operation with your Powerline Adapters:

1. Check Power Saving Mode: disable it using the tpPLC utility. For detailed instructions, How to enable/disable power saving mode on powerline adapters

2. Test Placement: Move your Powerline extender closer to the main router and the other Powerline adapter. Try placing them in the same room for testing to see if the issue persists.

3. Direct Connection Test: Connect your client devices directly to the main router to check if the issue is related to the Powerline connection or if it might be with your internet provider.

4. Isolate Device Issues: If the problem seems to affect only one client device, try connecting that device to a different network. Also, use different Ethernet cables or ports for wired devices to rule out cable or port issues.

Note: Since the issue only occurs during high-demand TV programs and not with streaming services, it may also be related to how your TV provider manages bandwidth during peak times. However, the above steps will help you confirm if your Powerline Adapters are working correctly.