Is It Your Wi-Fi or Your Laptop?

Experiencing lag while working, gaming, or streaming online? It’s often a sign that either your connection is failing to deliver data or your laptop is running out of steam.

A slow Wi-Fi or Ethernet connection shows up as:

• Buffering
• Slow-loading pages
• Pages that won’t load
• High latency
• Audio stuttering
• Disconnections

A struggling laptop can show the same symptoms when the CPU is bogged down, it’s running hot because the vents aren’t clean, or there’s very little system memory for it to use. There are others signs of a struggling laptop, too:

• Keyboard, mouse, and touchpad delays
• Frequent freezing
• Sluggish apps and programs
• Basic tasks feel slow as snails
• Sudden restarts

To determine if the slowdown is due to an internet connection issue or an overloaded laptop, try our fixes below, and then run a quick speed test to diagnose the strength of your connection.

Easy troubleshooting steps to try

If everything’s lagging, getting up to speed probably feels more important than diagnosing the issue. Here are four things to try right away:

• Close all your browser tabs.
• Shut down unused apps.
• Clear your cache.
• Restart your laptop.

We’ll go into more depth about each step below. If you’re pretty confident your internet provider is the problem, though, start shopping now.

Clues your connection is to blame

Slowness used to be synonymous with bad Wi-Fi or a slow internet connection. I can’t even begin to count the number of times I have raged at my internet providers over the years (not to mention the Wi-Fi routers they provide). Wi-Fi tech has gotten a lot better, but the connection itself is still one of the most common culprits.

However, because a struggling laptop can mimic network lag, you have to look for specific network-only clues to the slowdown:

• Websites load in chunks or take forever to render. Your connection is struggling to pull data fast enough, so your browser is just waiting to catch up.
• Clean videos pause constantly to buffer. Even on services that usually stream fine, your laptop is just waiting for a slow data stream to arrive.
• Uploads and downloads crawl. If even a small 2MB file takes ages to move, it’s probably a connection issue, not a hardware one.
• Laggy gameplay or “rubber-banding.” Your console or PC is struggling because the signal is arriving late or out of order.
• Browser errors like “Looking for host” or “Resolving host.” Your browser is stuck waiting on a server response before it can even start loading the page.
• Other Wi-Fi devices are slow. If every Wi-Fi device you use moves at a snail’s pace, then the internet connection is undoubtedly the slowdown culprit.

Clues your laptop is to blame

It’s easy to point fingers at internet providers, but an overworked CPU, a lack of system memory, or a failing storage drive will make your internet feel like old-school dial-up. Modern applications and software that use the internet require more processor power now than they did in years past.

If your laptop is the bottleneck, then you’ll see these red flags:

• Your system takes forever to start up. A slow boot usually points to too many programs launching automatically or a hard drive that’s straining under the load.
• Your entire system freezes, not just one app or browser tab. When everything locks up at once, that’s your computer’s resources hitting a wall.
• Your cursor turns into a spinning circle, rainbow beach ball, or hourglass. That symbol means your computer is waiting on itself to finish a task, not waiting on data from the internet.
• Your mouse skips, or your typing lags by a second or two. This is a sign your processor is too busy with something else to keep up with real-time input.
• Your fans run constantly, or the bottom of your laptop feels hot. Excess heat is usually a sign your hardware is working overtime, often because too many background processes are competing for resources.
• Apps are slow to open, even ones that don’t need the internet at all, like a calculator or a word processor. If something with no online component still lags, that’s about as clear a sign as you’ll get that it’s your laptop, not your Wi-Fi.

The single best way to confirm it’s your laptop

Clues are helpful, but there is one way to know for sure if your laptop is the problem: Try getting online with another device, such as a phone, gaming console, or smart TV. If things feel fast, you know your laptop itself is the culprit.

Run a speed test to get hard data

Whether you suspect that your Wi-Fi or your laptop is to blame, a simple speed test will point you in the right direction.

If you get a poor result on Wi-Fi, try hardwiring by plugging your laptop directly into the router with an Ethernet cable. If you don’t have an Ethernet port, make sure your laptop is connected to your home Wi-Fi network. Then, run the test again.

How to read your results

You should get a download and upload speed within about 50Mbps of what your plan promises, plus a ping lower than about 100ms. If you don’t know your internet type or plan, you need a download speed of at least 25Mbps and an upload speed of around 5Mbps.

If your results don’t meet those targets (or if the speed test is stuck on a “loading” circle), the problem could be your internet connection or your Wi-Fi.

Learn how to fix a slow internet connection.

If you’re getting speeds of 25Mbps or faster, the issue is probably your laptop.

Troubleshoot your laptop

Troubleshooting on a computer can be tricky. Every device is different, and any apps or hardware you’ve added bring another layer of complication.

Here’s what to try first.

Close all your tabs and unused browsers and windows

Every open tab is like a mini program, and they’re all asking your computer to do something. Close any browsers, apps, and windows you’re not using so your machine can use all its resources on the task at hand.

Shut down any apps you don’t need

Apps such as Zoom, Teams, Microsoft Office, and Spotify often start up automatically when you turn your computer on. If you’re dealing with slowdowns or overheating, shut down anything you don’t need. To stop these from launching automatically, you can disable them in the Startup apps tab of your Windows Task Manager or the Login Items section of your Mac’s System Settings.

Troubleshoot with Task Manager or Activity Monitor

Task Manager (on Windows) and Activity Monitor (on Mac) provide a real-time view of your system’s performance. By opening these tools, you can identify which apps or background processes are consuming excessive CPU, memory, or network resources, helping you pinpoint exactly what is causing the slowdown.

Clear your cache and temp files

When your hard drive gets too full, your laptop can’t use its virtual memory, and that makes everything feel super slow. Fix it by emptying your trash or recycle bin and clearing the cache on your browser.

It’s also a good idea to delete apps and desktop software you don’t need, and to upload files into cloud storage (like OneDrive or iCloud) rather than storing them on your laptop.

Turning everything off and back on again gives you a fresh slate. It clears temporary data errors, stuck background processes, and memory leaks that have accumulated over time.

For the best results, turn your machine all the way off and wait 30 seconds before turning it back on.

If you can, pull the laptop’s battery for 30 seconds to make sure you’ve drained the power of every component. It’s the best way to power cycle your laptop, although many models don’t provide easy access to the battery.

Make sure your vents are clean

Blocked intake and exhaust vents can cause your laptop to overheat. When things get too hot, your computer will often “throttle” its performance—meaning it intentionally slows down to protect its internal components from heat damage.

To keep the air flowing, avoid using your laptop on soft surfaces like a bed or a couch. If you like to work from your lap, use a lap desk. For desktop use, consider a third-party cooling pad or a stand to keep the machine elevated and the intake vents clear. This elevation is especially important for laptops with passive cooling, as they need to dissipate heat through the metal chassis.

Update the OS and drivers

Keeping your software current is a simple way to boost stability. Start by running your standard system updates to ensure your operating system (OS) is up to date.

Don’t stop there, though. Manually updating your network (NIC) drivers and GPU drivers can do wonders for performance. Updated network drivers help your hardware communicate better with your router, while current GPU drivers ensure the pages and videos you’re viewing render smoothly.

My take: Don’t get frustrated, get help

Tech problems can bring up big emotions for a lot of people. You might be frustrated or even embarrassed, especially if the glitch happened during an important meeting or gaming session.

First, know that you’re not alone. Even highly technical folks feel that way sometimes. Second, don’t let those emotions get the best of you. Just ask for help.

If you think your Wi-Fi is the problem, contact your internet provider. If you think your Windows laptop is the problem, take it back to the store where you bought it or call around for a help desk at a local computer store.

If you’re having a problem with your Mac, make an appointment at the Genius Bar in the nearest Apple store.