TFO (TCP Fast Open) reduces the time to establish a connection by 1-2 round trips. Faster channel changes. Some resellers support TFO. Most don't.
Here's the TFO feature. A British IPTV reseller supporting TFO can establish connections faster, especially on high-latency networks (mobile, satellite). Channel changes feel snappier.
What actually works for faster channel changes on high-latency networks is TFO. Each channel change saves 50-200ms.
I use British IPTV on a satellite connection (600ms latency). TFO saves 600ms per channel change. Huge difference.
The pattern that keeps showing up is that IPTV reseller UK operators with TFO serve high-latency users better. Most don't enable it.
Honestly, if you're on high-latency network (satellite, mobile), ask about TFO. A IPTV reseller UK with TFO will have faster channel changes.
That said, TFO requires modern kernels and isn't enabled by default on many servers.
In most cases, British IPTV TFO is a niche optimization for high-latency connections.