Plan for 15-25 Mbps sustained per 4K stream and treat the top of that range as your working number. Sustained is the word that matters: a line that peaks at 200 Mbps at 2pm and sags at 9pm will fail during exactly the programming you care about. Two 4K streams in one house means well above 50 Mbps at peak with headroom left for everything else connected. If a service encodes in HEVC, the same picture arrives at roughly half the bitrate of H.264, which turns a marginal line into a comfortable one. Ask what codec a service uses before you upgrade your internet plan.

1. 1Budget the top of the range, not the bottom
2. 2Sustained evening speed beats headline speed
3. 3HEVC roughly halves the bitrate requirement

Because the failure threshold sits between the two. At 5-8 Mbps a 1080p stream survives dips that a 15-25 Mbps 4K stream does not. Live feeds arrive as roughly six-second segments, and the player has to receive each one before the previous finishes playing. Fall behind on a 4K segment and the freeze is visible immediately, while the same dip on 1080p is absorbed. This is also why setting the buffer to none feels faster but leaves less margin. If 1080p is stable and 4K is not, do not reinstall anything: measure your sustained throughput during the hour it fails.

1. 1The dip that 1080p survives, 4K does not
2. 2Segments must arrive faster than they play
3. 3Measure during the failing hour, not the next morning

Wired wins whenever the numbers are close. An Ethernet adapter removes channel contention with neighbors, interference from other devices, and the throughput loss that comes with distance and walls. On a 5 GHz band close to the router, wifi handles 4K comfortably; two rooms away on a crowded band it often does not, and the symptom is intermittent stutter at the same times each evening. Before buying anything, run a speed test standing next to the stick during your worst hour. If that number is under about 25 Mbps while the router reports far more, the wireless hop is your constraint.

1. 1Test speed at the stick, not at the router
2. 25 GHz close in is usually fine; distance is not
3. 3Same-time-each-evening stutter points at contention

About 7 GB per hour per 4K stream. Three hours a night is roughly 630 GB a month for one viewer, and a household with two 4K screens running most evenings approaches or passes a 1 TB cap. Mixing in 1080p at about 3 GB per hour changes the picture considerably, and so does HEVC. If you have a data cap, decide deliberately which content deserves 4K rather than defaulting the whole catalog to it; sport and film benefit visibly, talk formats and news rarely do. Most players let you pick a preferred stream quality per profile, which is the cleanest place to set that policy.

1. 1One 4K viewer, 3 hours nightly: about 630 GB/month
2. 2Reserve 4K for content where it shows
3. 3Set preferred quality in the player, not per channel

A 4K stick decodes HEVC and H.264 at these bitrates without difficulty; decoding is not where the strain lives. Memory is. Player apps hold the visible channel list in memory, and above roughly 18,000 visible channels they become unstable on stick-class hardware regardless of picture quality. So a device that plays 4K perfectly can still crash while browsing. Hide unused groups and the same stick behaves. The other thing no stick can address is provider-side capacity: if a service is oversold at 9pm, your hardware is irrelevant, which is why a stated uptime figure such as 99.99%, about 53 minutes a year, is worth asking for.

1. 1Decoding is easy; memory is the real limit
2. 2Hide groups to stop browsing crashes
3. 3Ask for uptime numbers, not adjectives