What slows down your download speed and what you can do about it

Download speed depends on three things: your internet connection, what's happening on your network right now, and your PC's hardware. Most people blame their internet provider when the real problem is something running in the background, or a router placed in the wrong room. The fastest fix is usually stopping other devices from using your network, moving your router closer, or checking whether your PC is actually receiving the speed your provider promised.

Before you call your internet company, run a speed test at speedtest.net or fast.com to see what your PC is actually getting. Compare that number to your bill. If you're paying for 100 Mbps and getting 50 Mbps, your provider is the problem. If you're getting close to what you pay for, something else is slowing your downloads.

Key Takeaways

  • Run a speed test to find out whether your internet connection itself is slow or whether something on your PC is the bottleneck.
  • Move your router to a central location, away from walls and metal objects, and keep it at least three feet from your PC if you use Wi-Fi.
  • Stop background programs and pause cloud syncing services like OneDrive or Google Drive while downloading large files.
  • Use a wired Ethernet cable instead of Wi-Fi if your PC is stationary — it's almost always faster and more stable.
  • If your speed test shows you're getting what you pay for, the website or server you're downloading from may be the limit, not your connection.

Switch from Wi-Fi to a wired Ethernet connection

Wi-Fi is convenient but slower and less stable than a cable. If your PC is near your router or you can run a cable to it, plug in an Ethernet cable directly. Most PCs automatically detect the wired connection and use it instead of Wi-Fi. You should see an immediate speed increase, especially if you were far from the router or had walls between you and it.

If you can't run a cable through your house, at least move closer to the router. Wi-Fi speed drops sharply with distance and through obstacles like walls, metal filing cabinets, and microwaves. Moving from another room into the same room as your router often doubles your speed.

Stop other devices and programs from using your bandwidth

Every device on your network shares the same connection. If someone is streaming video, playing an online game, or backing up photos to the cloud on another device, your download will be slower. Ask household members to pause streaming or gaming, or wait until they're done.

On your PC itself, check what's running in the background. Open Task Manager by pressing Ctrl+Shift+Esc, click the Performance tab, then click Open Resource Monitor. Look at the Network tab to see which programs are sending or receiving data. Cloud sync services like OneDrive, Google Drive, and Dropbox often run constant background uploads. Pause them temporarily by right-clicking the icon in your system tray and selecting Pause or Stop Syncing. Antivirus software and Windows Update can also consume bandwidth — check if either is running and pause them if you need the speed now.

Move your router to a better location

Router placement matters more than most people realize. A router in a closet, behind a TV, or in a corner of your house will have weaker signal than one in a central, open location. Move it to the middle of your home if possible, elevated on a shelf rather than on the floor. Keep it away from metal objects, microwaves, and cordless phones, which interfere with the signal.

If you're using Wi-Fi on a laptop or tablet, the distance between you and the router affects speed. Sitting 10 feet away in the same room is much faster than being 30 feet away in another room. For a stationary PC, this is another reason to use Ethernet instead — you don't have to worry about distance or obstacles.

Check your internet plan and contact your provider if needed

Run a speed test again after making these changes. If you're still getting significantly less speed than your bill promises, contact your internet provider. Tell them your speed test result and the speed you're paying for. They may need to send a technician to check the line, or they may find that your modem or router is outdated and needs replacement.

Some providers throttle speeds during peak hours (usually 7 p.m. to 11 p.m.) or if you've used a lot of data that month. Ask whether either applies to you. If your plan includes a data cap and you're near it, that could also explain slower speeds.

Update your network drivers and check your PC's hardware

Outdated network drivers can limit your speed. Open Device Manager by right-clicking the Start button and selecting Device Manager. Find Network adapters, right-click your adapter, and select Update driver. Windows will search for the latest version. If an update is available, install it and restart your PC.

If your PC is very old, its network hardware may not support modern speeds. Most PCs from the last 10 years can handle gigabit Ethernet (1000 Mbps), but older ones may be limited to 100 Mbps. Check your PC's specifications or ask the manufacturer. If you're using Wi-Fi, an older adapter may only support older Wi-Fi standards like 802.11n instead of the faster 802.11ac or Wi-Fi 6. In that case, upgrading your router or PC may be necessary to see real improvement.

Disable VPN and proxy settings temporarily

A VPN (virtual private network) encrypts your traffic for privacy but adds overhead that slows downloads. If you use a VPN, disconnect it temporarily and run a speed test. If your speed improves significantly, the VPN is the bottleneck. You can keep using it for privacy-sensitive tasks but turn it off for large downloads.

Check whether you have a proxy server configured. Open Settings, search for proxy, and click Open proxy settings. If Use a proxy server is toggled on, turn it off temporarily and test again. Proxies are less common on personal PCs but can slow things down if misconfigured.

Frequently Asked Questions

Why is my download speed slower than my internet speed test shows?

The speed test measures your connection to a nearby server. The website or server you're downloading from may be slower or farther away, which limits your speed. Large files from popular sites usually download at close to your full speed, but small files from distant or overloaded servers may be much slower.

Does restarting my PC actually help with download speed?

Restarting clears background programs and processes that may be using bandwidth or CPU resources. It's worth trying if you haven't restarted in a while, but it's not a permanent fix. If speed is slow again after a few hours, something is running in the background that you need to identify and stop.

Is 5 GHz Wi-Fi faster than 2.4 GHz?

5 GHz is faster but has shorter range and doesn't pass through walls as well as 2.4 GHz. If your router broadcasts both bands, try connecting to 5 GHz if you're close to the router. If you're far away or have walls between you and it, 2.4 GHz may actually be faster because the signal is stronger. Wired Ethernet is faster than either.

Can I increase download speed by changing DNS settings?

Changing DNS (to services like 1.1.1.1 or 8.8.8.8) can make websites load faster by resolving addresses more quickly, but it won't increase your actual download speed. It may help if your ISP's DNS is slow, but it won't fix a slow internet connection or network congestion.

What download speed do I actually need?

For web browsing and email, 10 Mbps is plenty. Streaming video needs 5 to 25 Mbps depending on quality. Online gaming needs 5 to 10 Mbps. Large file downloads benefit from anything above 50 Mbps, but the real limit is usually the server you're downloading from, not your connection.