The checklist, in order of impact
| Setting or habit | Why it matters | See |
|---|---|---|
| Cable the main TV | Removes Wi-Fi drop-outs entirely | Wi-Fi vs Ethernet |
| Put the TV on 5 GHz (or 6 GHz) | Faster and less crowded than 2.4 GHz | Wi-Fi bands |
| Router placement | Out in the open, high up, not in a cupboard or behind the TV | Mesh Wi-Fi |
| QoS priority for the TV | Protects the stream when others download | Router QoS |
| Firmware up to date | Fixes bugs and improves stability | Router app or web page |
| Broadband security filter | Can block a server it classes as risky | Not working on Wi-Fi |
| DNS | Rarely needed; can fix lookup failures | DNS for IPTV |
Wi-Fi channel and width
On busy 2.4 GHz and 5 GHz bands, routers pick a channel automatically. If your neighbours’ networks crowd yours, a Wi-Fi analyser app on a phone can show the busiest channels; choose a quieter one in the router’s wireless settings. Leave channel width on automatic unless you know your area well: wider channels are faster but more prone to interference.
Settings to leave alone
- IPTV mode, IGMP proxy, VLAN tags: for broadband providers’ own TV boxes only. See what is IPTV mode on a router.
- Port forwarding and DMZ: IPTV apps make outgoing connections, so they don’t need inbound ports. Opening ports or putting a device in the DMZ adds risk for no gain.
- Disabling the firewall: never needed for IPTV.
- Changing MTU: almost never the cause of buffering on home broadband.
When the router itself is the problem
Older routers, especially basic models supplied years ago, can struggle with several HD and 4K streams at once. Signs are buffering that improves after a restart, then returns, and slow speeds on every device in the evening. Ask your broadband provider about a newer router, or add a mesh system. See UK broadband providers and IPTV.