Because it is many events at once, for a long time. A single football game is one feed for three hours. A tennis day is several courts running simultaneously for six to eight hours, and households following it tend to have two or three screens open together. Run the arithmetic before blaming an app: one 1080p stream is about 3 GB an hour, so three screens across a seven-hour session is roughly 63 GB, and 4K roughly triples that at about 7 GB an hour per screen. None of this is unusual for a modern line, but it is worth knowing before a data cap or a shared router becomes the story.

The tour moves between continents all year, which is why guide times matter more here than in most categories. European afternoon play lands in the US morning, Australian sessions run through the US night, and a match starting on one US date can finish on the next. Two consequences follow. First, check that the guide renders in your local zone rather than the source zone, because an EPG that is correct for one household can be hours off for another. Second, catch-up matters more than live for anyone who sleeps, so confirm how far back a service lets you go before the session rather than after it.

Count screens, not people. Plans here run from 1 to 5 simultaneous connections, and the honest way to size it is to count how many screens will be lit at the same moment during a long session, then add one for the tablet nobody admits to. A second connection also buys you a diagnostic: if a stream stalls on one device and plays on another at the same instant, the fault is that device or its wifi rather than the service. Installs are unlimited regardless of plan, so the app can sit on six devices while a two-connection plan still fits, as long as only two play at once.

Test while it is busy, because a quiet Tuesday proves nothing about a Saturday. Four checks cover it. Start a stream and let it run a full hour rather than sampling for two minutes. Open a second screen and confirm both hold. Switch away to another channel and back if anything stalls, since recovery on switch-back means the session stalled and your bandwidth was never the cause. Finally, watch the guide during play and see whether the program shown matches what is on screen. A $5 trial running 24 hours exists precisely so this happens before a year is committed.

1. 1Run one stream for a full hour, not two minutes
2. 2Open a second screen during peak evening hours
3. 3Use the switch-away-and-back test on any stall
4. 4Compare the guide row against what is actually playing

Setting the buffer to none and pointing the device at a public DNS resolver are the two changes that reliably help, and hiding unused groups keeps the player under the roughly 18,000 visible channels where list handling stays stable. Beyond that, be honest about the limit: if a provider has oversold capacity during a busy window, no device setting touches it. That is the reason to ask what uptime a service commits to and in what units. IP4KTV holds 99.99%, which works out to fewer than 53 minutes of downtime across a full year, and a number like that can be checked in a way an adjective cannot.