Seven seconds. That's how long a user will wait for a channel to load before they assume it's broken. Not 10 seconds. Not 15. Seven. After seven seconds, their finger hovers over the "switch to something else" button. After 10 seconds, they click it.
A British IPTV reseller who understands this builds their service around speed. The IPTV reseller panel can be configured for faster channel changes. Smaller buffer. Fewer segments. Direct source connections instead of proxies. Every millisecond you shave off channel change time is a user who stays engaged.
Let me explain what causes slow channel changes. Large buffer settings (you set them for stability, but they cost speed). Poor peering between your server and the user's ISP. Overloaded servers. Inefficient source formats. All of these are fixable. Most resellers never check.
A real example. A reseller in Liverpool noticed users were complaining about slow channel changes. He checked his IPTV reseller UK panel settings. His buffer was set to 8 seconds. He lowered it to 4 seconds. Channel changes became nearly instant. Users stopped complaining. A few even messaged to say "whatever you did, it's faster now."
What actually works is testing your own channel change speed weekly. A British IPTV service that loads faster feels more premium, even if the channel quality is the same. Speed is perceived as quality.
In most cases, your IPTV reseller panel defaults prioritize stability over speed. That's the right call for streaming. But after stability is achieved, start shaving milliseconds. Your users will notice.