@SantiC 

Hi, Thank you very much for the feedback.

Have you set any parental control profiles for the devices?

Would there be any error message when the Disney+ content didn't play?

Have you tried to put the old router back, and set Deco X60 into Access Point mode to see whether it helped:

How to set up Deco to work in Access Point mode

Thanks again and Best regards.

  @SantiC 

Hi, have you tried to set Deco into Access Point mode so that Deco will follow the streaming settings on the ISP DHCP router?

I think some default settings on Deco don't match with the Disney+ streaming service rather they are incompatible.

If the Access Point mode works, we could try to edit the MTU setting on the Deco APP(The MTU on Deco is 1500 by default).

-It is under Deco APP>More>Internet connection>IPV4>Dynamic IP

You could refer to this link to find the MTU size on the devices when it is on ISP router network:

https://www.wikihow.com/Find-Proper-MTU-Size-for-Network

Thank you very much and Best regards.

  @SantiC 

Hi, Thanks for the update.

Have you checked the MTU settings on the device when it is connected to the ISP router since 1500 is the default value on Deco?

I have seen someone mention setting the MTU to 1350

https://forums.whirlpool.net.au/archive/974p0zk7

Do you have a similar issue with other streaming services?

Or are you able to constantly reproduce this issue in a short time?

If the TV is wirelessly connected to Deco, please also refer to the following suggestions:

1. Disable "Fast roaming" and "beamforming" on the Deco APP>More>Advanced.

2. Turn off "Mesh Technology" for the smart TV.

Best regards.