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Fix Center

Most lag has one of a handful of causes, and each has a known fix: a router queue that fills when the line is busy, a weak Wi-Fi link, downloads running in the background, slow DNS lookups or stale settings on a device. Find your symptom below, open the guide and test again afterwards to confirm the fix worked.

Each guide matches a problem the Lag Check can find. Run the check to see which ones matter for you.

Which guide do I need?

Match what you notice to the usual cause.

Ping jumps or calls freeze while someone else downloads, uploads or streams
The queue in your router or modem fills up (bufferbloat). Fix lag under load
Lag spikes and dropouts that are worse in some rooms, and gone on a cable
The Wi-Fi link, not the line. Fix unstable Wi-Fi
Lag in games although the speed test looks fine
A busy line, Wi-Fi, a distant server or the route. The guide checks them in order. Fix lag in online games
Spikes at random times with nobody obviously using the line
An update, game download or cloud backup running in the background. Stop background downloads
Pages pause before they start to load, then load normally
Slow name lookups (DNS). Switch DNS resolver
Sites won't open after a router change, an outage or removing a VPN
Stale network settings on the device. Reset network settings
Websites see your real location while your VPN is on
The browser's WebRTC feature is going around the VPN. Stop WebRTC leaks

How to use the guides

  1. Measure first. Run the Lag Check on the device that has the problem and note the lag under load grade, the DNS row and your speeds.
  2. Change one thing. Follow the guide for the worst result. Fixes inside your home come first because they are the ones you control; the guides say when a problem is on the line or beyond it.
  3. Measure again. A fix that worked shows up in the same test. If nothing changed, undo it and try the next cause.

Router settings differ by brand: the router guides show where Smart Queue is on each one, and the per-game guides cover servers, ports and settings for popular games.

Common questions

Which fix guide should I start with?

Start with the one your test points to. Run the Lag Check: a lag under load grade of B or worse means the bufferbloat guide, a result that is much better on a cable means the Wi-Fi guide, and a slow DNS row means the DNS guide. If you would rather not choose, Test & Optimize runs every check and puts the fixes in order.

Do I need to buy anything to fix lag?

Usually not. Most of these fixes are settings: Smart Queue on the router, a Wi-Fi channel, a download schedule, a DNS address. Hardware only comes into it when the router has no Smart Queue at all or a room is out of Wi-Fi range, and each guide says so when that is the case.

Can these guides make my internet plan quicker?

No. Nothing at home can raise the speed your provider sells you. The guides remove the things that add delay on top of it: a queue that fills when the line is busy, a weak Wi-Fi link, downloads running in the background and slow name lookups. That is what makes games and calls feel laggy on a line that tests fine.

How do I know a fix worked?

Test before you change anything and again afterwards, on the same device and at a similar time of day. The Lag Check keeps your last few results in the browser so you can compare them, and the Smart Queue calculator shows the before and after for that fix.