@robinprice I don't have this problem with my router. Just curious to confirm, if you restore the router to factory settings, does it still only show half the speed without any settings?

@bobdro Here's a similar post: https://community.tp-link.com/en/business/forum/topic/244488 Can it help you?

@KLX Hi, How about setting the port forwarding on the ER605? (you can choose the DMZ directly if you want) https://www.tp-link.com/en/support/faq/2132/

@Alex_UTS Hi, Just to confirm, what kind of device is that IPTV you have specifically? Is it from your network service provider or something like Netflix IPTV? Seeing as you have quite a few devices,...

@GrahameHorner In my experience, it is still important to make sure that the local controller is connected and stable? Is there a cloud light on the device to see what the status is? Is the oc200...

@Rusdie Hey! Maybe this article will help you: https://www.tp-link.com/en/support/faq/2133/