Activating IGMP slows down the entire network
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My ISP is dU (UAE), they are also the provider of the IPTV service. This is the last setting I used for IPTV, I tried pretty much everything but this was the last:
The speeds I measured on my various devices was around 400MB down and 200MB up (wireless), when activating IGMP or trying to configure VLAN this speed will drop to 10-20MB with horrible ping. I still have QoS on standard, it is probably the only thing I have not tried so far.
BTW. My daughters boyfriend has an ASUS router that I tried out. That actually works when activating IGMP, it has some extra settings for the IGMP proxy (port being one) that seem to do the trick. That router is just very unstable, I like my C5400 much more.
I have tried several settings, what you see in the screenshot is the last. I also had the proxy active, same results. Then I did this:
I also tried bridge mode, clicked 802.1Q tag, enables VLAN for IPTV multicast etc. I did factory reset several times. Nothing works.