The short version
- 01Test another device on the same network before touching anything.
- 02Measure at fast.com, on or near the device that is buffering.
- 03Unplug the device, press its power button once, and wait 1 minute.
- 04Unplug the modem and router for 30 seconds, then wait for the lights to settle.
- 05Move the router off the floor into open space, away from other wireless kit.
- 06Cap the video quality if the connection cannot sustain what it is reaching for.
Start here
Does it buffer on every device, or only one?
That question decides everything that follows. If Netflix buffers on the TV but plays fine on a phone over the same Wi-Fi, the network is delivering enough and the TV or its connection is the problem. If everything in the house buffers, the connection itself is the thing to work on. Measure it at fast.com before changing anything — Netflix asks for 3 Mbps for HD, 5 for 1080p and 15 for 4K, and knowing which side of those numbers you are on saves restarting hardware that was never at fault.
Applies to: Netflix on smart TVs, streaming sticks and boxes, games consoles, phones, tablets and computers. The power-cycle timings are Netflix’s own and differ between TV devices and mobile devices.
What is buffering, and where?
Buffering is not a Netflix fault in the ordinary sense. The app continuously measures how fast data is arriving and picks a quality it thinks the connection can sustain; buffering is what happens when that guess turns out to be wrong. So the useful work is finding out what the connection is actually delivering to that particular device, rather than reinstalling an app that is behaving correctly given what it has been handed.
Only one device buffers
Does another device play fine?
Isolate the deviceEverything in the house buffers
What does fast.com report?
Measure the speedWorse in the evening
How many devices are streaming?
Check contentionFine on cable, bad on Wi-Fi
Where is the router?
Move the routerStarts fine then drops quality
Is the speed borderline?
Set the quality1. One device or all of them, Wi-Fi or cable
Netflix’s own troubleshooting asks you to establish two things before anything else: whether the problem affects a single device or several, and whether the connection is over Wi-Fi or a cable. Between them those two answers eliminate most of the possibilities.
If one device buffers while another plays the same title fine on the same network at the same time, the internet connection is adequate and you can stop thinking about it. The fault is that device, its wireless reception where it sits, or the app on it. A TV in a back room and a phone in your hand are on very different Wi-Fi even though they show the same network name.
If everything buffers at once, the shared thing is the connection, and the device-level fixes below will not help. Go to section 2 and measure it.
The Wi-Fi versus cable question matters because it tells you which half of the path to suspect. A device on Ethernet that buffers points at the connection into the house; a device on Wi-Fi that buffers while a wired one is fine points at the wireless link, which is a different and usually easier problem.
One device
The network is fine. Power-cycle that device and look at where it sits.
Everything
The connection. Measure it, then restart the modem and router.
2. Measure it, because the numbers are specific
Netflix publishes exact requirements, which makes this unusually easy to settle. It recommends 3 Mbps or higher for HD at 720p, 5 Mbps or higher for full HD at 1080p, and 15 Mbps or higher for ultra HD at 4K.
Netflix runs its own speed test at fast.com, and it is the right one to use here because it measures against Netflix’s own servers rather than a generic test. A connection that tests well elsewhere and poorly at fast.com is telling you something useful about the route between you and Netflix specifically.
Run it on the device that is struggling if you can, or in the same room if you cannot. A speed measured on a laptop next to the router says nothing about what reaches a TV two floors up, and that mismatch is the single most common reason people conclude their connection is fine when it is not.
The result sorts the problem immediately. Comfortably above 15 Mbps and still buffering means the connection is not the constraint and the device or the wireless link is. Below the figure for the quality you are trying to watch, and the app is doing exactly what it should — the question becomes why the connection is slow, not why Netflix is buffering.
Test while the buffering is happening. A speed test run the next morning measures a different network from the one that was struggling at nine in the evening.
3. The device power cycle, and why the timing is stated
Netflix gives specific timings rather than saying “restart it”, and the specificity is the point — these devices hold state in memory that a quick off-and-on does not clear.
For a TV or streaming device, unplug it from power, press the power button on the device once, and wait 1 minute. Netflix offers an alternative for devices where that is awkward: leave it unplugged for 3 minutes instead. Pressing the power button while unplugged is not superstition; it discharges what is left in the device so the memory actually clears.
For a phone or tablet the procedure is different and shorter: power the device off completely, then power it back on after 10 seconds.
The distinction that matters throughout is between off and standby. Netflix is explicit that the device must be completely off, not in sleep or standby mode. A modern TV pressed once with the remote is almost always in standby, which preserves exactly the state you are trying to clear, and this is why so many people report that restarting changed nothing.
TV or streaming device
Unplug, press power once, wait 1 minute — or leave it unplugged 3 minutes.
Phone or tablet
Power off completely, wait 10 seconds, power back on.
4. The modem and router, and the wait nobody does
If more than one device is affected, this is the step that matters. Netflix’s instruction is to unplug the modem — and the wireless router too, if it is a separate box — from power for 30 seconds.
The part people skip is what comes next. After plugging them back in, wait until no new indicator lights are blinking before testing anything. A modem takes time to re-establish its connection upstream, and a router behind it takes more time again. Testing during that window produces a failure that says nothing about whether the restart worked, which usually leads to restarting everything a second time for no reason.
Order matters if the two are separate devices: the modem first, then the router once the modem has settled. A router that comes up before the modem has a connection may hold a bad configuration until it is restarted again.
This is also the point to notice whether you have a separate modem and router at all. Many households have one combined box from the provider, in which case there is one thing to unplug and the 30 seconds applies to it.
5. Where the router is, and what is near it
When the connection tests well but one Wi-Fi device struggles, the wireless link is the constraint and Netflix offers three specific adjustments.
The first is to put the router and the device in the same room where possible. That is often impractical for a TV, but it is worth trying temporarily as a test even if it is not a permanent arrangement — if buffering stops with the router in the same room, you have proven the diagnosis and can then decide what to do about it.
The second is to move the router away from other wireless devices. Cordless phones, baby monitors, other routers and microwave ovens all occupy the same crowded band, and a router sitting in a nest of electronics is competing with all of them.
The third is the one most likely to be wrong in a real house: put the router in an open space off the floor, on a desk or a bookshelf. Routers end up behind the television, inside a cabinet, or on the carpet behind a sofa, all of which cost signal in every direction. Raising it and clearing the space around it is free and frequently the largest single improvement available.
6. When the connection is genuinely limited
If the measured speed is below what your chosen quality needs and there is nothing to be done about the connection itself, Netflix’s own suggestion is to change the video quality setting, which gives a more stable connection and addresses buffering directly.
That is a real trade rather than a defeat. Netflix picks a quality dynamically, and on a marginal connection it will keep reaching for a level it cannot sustain, dropping back, and reaching again — which is experienced as repeated buffering. Capping the quality stops the app from over-reaching and often produces a better evening than intermittent 4K does.
Netflix also names contention explicitly: the quality you get is affected by how strong your connection is and how many devices in your home are using the internet at the same time. If buffering is worse in the evening, that is the likely explanation, and it is worth checking what else is running before concluding the connection has degraded.
Netflix’s last point on this is one people rarely consider: if your internet service provider limits your speed, the quality setting is the lever you have. A connection that is throttled after a data cap, or on a plan that was sized for browsing rather than 4K, will not be fixed by restarting anything.
Frequently asked questions
What internet speed does Netflix need?
Netflix recommends 3 Mbps or higher for HD at 720p, 5 Mbps or higher for full HD at 1080p, and 15 Mbps or higher for ultra HD at 4K. Test at fast.com, which measures against Netflix’s own servers, and run it on or near the device that is actually buffering.
Why does Netflix buffer on my TV but not my phone?
Because they have different connections even on the same network. A TV in a back room gets far weaker Wi-Fi than a phone in your hand. The internet connection is evidently adequate, so work on that device: power-cycle it properly, and look at where it sits relative to the router.
How long should I unplug my streaming device?
Netflix says to unplug it, press the power button on the device once, and wait 1 minute — or leave it unplugged for 3 minutes instead. It must be completely off rather than in standby, which is why pressing the power button while unplugged is part of the instruction.
How long should I leave the router unplugged?
Netflix says 30 seconds for the modem and router. The step people miss is afterwards: wait until no new indicator lights are blinking before testing. A modem needs time to re-establish its connection, and testing during that window tells you nothing.
Why does Netflix buffer only in the evening?
Usually contention. Netflix notes that quality depends on your connection strength and how many devices are using the internet at once. Evening is when the household and the wider network are busiest. Check what else is streaming before assuming the connection has degraded.
Should I lower the Netflix video quality?
If your measured speed is below what your quality needs, yes — Netflix recommends it for a more stable connection. On a marginal connection the app keeps reaching for a level it cannot hold and dropping back, which is what repeated buffering feels like. Capping it stops that cycle.
Sources and review notes
Checked on . Compiled by Glitchary from Netflix’s articles on slow loading and buffering and on recommended internet speeds. The power-cycle timings, the 30-second modem restart and the indicator-light wait, the router placement advice, the speed figures and the video quality guidance are Netflix’s. The one-device-versus-all framing, the reasoning about standby, and the note about where to run the speed test are editorial. Steps differ by device — check Netflix’s device-specific article if yours is not covered. Glitchary is independent of Netflix.