Watching IPTV on three televisions in the same house at the same time is entirely normal, and it does not require three separate subscriptions — it requires the right number of simultaneous connections on a single subscription, plus a home network that can actually deliver three stable streams at once.
Start with how many rooms stream at the same time
Count rooms that are realistically playing different content simultaneously, not every TV in the house. A family room and a kids' bedroom both active during the same evening hour is two connections; a third room that is usually off during that window does not need to be counted at all. Oversizing the plan wastes money, and undersizing it produces the exact login errors covered in our connections guide.
Why the network matters as much as the plan
Three simultaneous streams put real, sustained load on a home router, and a weak Wi-Fi signal in one room will show up as buffering specifically in that room even though the subscription itself is working fine everywhere else. Wired connections for any TV that is not portable, and sensible router and Wi-Fi settings, make a bigger practical difference than almost anything else once more than one room is involved.
Placing the router for a multi-room house
A router buried in a closet on one side of the house struggles to serve a bedroom on the opposite side evenly, and this unevenness gets worse, not better, the more rooms are streaming at once. See home network tips for a busy family house for placement and mesh-extender guidance specific to homes with several active rooms rather than a single TV setup.
A sensible way to roll it out
Set up and test one room fully working before adding the second and third, rather than wiring every room at once and troubleshooting three new installs simultaneously. This makes it far easier to tell whether a problem belongs to the network, the device, or the subscription when something does not work as expected.