Hello @velin98, thank you for posting on the TP-Link Community. Please go through the configuration guide to review all the settings of Bandwidth Control on the router:...

@dkg Can I have a screenshot of the IPv6 settings page? You can send it via email if you are concerned about the security.

@SpaceCowboy74 Is the RE550 joining the AX11000 network via Onemesh? Please be sure both the AX11000 and the RE550 are running with the latest official firmware. To assist and figure it out...

Hello @m.f, if that is the case, I would suggest you request a replacement as per the local RMA policy, then monitor the performance: https://www.tp-link.com/support/replacement-warranty/ Do let me...

@pg7 Thanks for getting back. To assist and figure it out efficiently, I've forwarded your case to the TP-Link support engineers who will contact you with your registered email address later. Please...

Hello @Homes, What's the model number of the TP-Link router? You can check if woozle's suggestions will work in your case: https://community.tp-link.com/en/home/forum/topic/526350