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Speed TestQualityStabilityBufferbloatPlan auditCalculatorProvider testsDataSlow InternetGuides

10 Ways to Diagnose and Fix Slow Internet

Tired of the buffering wheel? Slow internet frustrating you? Try these 10 simple steps to troubleshoot common issues and potentially boost your connection speed right now.

First, know your starting point:

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Run SwiftSpeedTest before trying these fixes to measure your improvement!

1. Reboot Your Modem and Router

Restart through the device app or admin interface when available, or follow the ISP or manufacturer's approved power-cycle sequence. Do not use a factory-reset button unless you intend to erase the configuration. Retest before assuming the restart helped.

Did it help? Run SwiftSpeedTest again to check!

2. Move Closer to Your Wi-Fi Router (or Move the Router)

Wi-Fi signals weaken significantly with distance and obstructions (walls, appliances). Try moving your device closer to the router. If that's not practical, try relocating your router to a more central, elevated, and open location in your home. Avoid placing it in cabinets or near metal objects.

Did it help? Run SwiftSpeedTest again to check!

3. Switch to the 5 GHz Wi-Fi Band

Many routers use 2.4 GHz for longer reach and 5 GHz for higher potential capacity at shorter range. Band steering and naming vary, so test both bands in the room you use instead of assuming either one will be faster there.

Did it help? Run SwiftSpeedTest again to check!

4. Change Your Wi-Fi Channel

Neighboring networks can share airtime. Prefer the router's automatic channel selection or a manufacturer-supported channel scan, then compare matched tests. Avoid changing regulatory-region or DFS settings unless the vendor explicitly supports it for your location.

Did it help? Run SwiftSpeedTest again to check!

5. Use a Wired Ethernet Connection

A matched Ethernet test removes the Wi-Fi radio path and helps isolate the bottleneck. It is not automatically faster if the cable, adapter, or port is slower than the wireless link, so record the negotiated link rate and compare both tests.

Did it help? Run SwiftSpeedTest again to check!

6. Update Your Router's Firmware

Check the router's built-in update screen or the manufacturer's official support page for your exact model. Follow the vendor procedure, keep power connected during the update, and avoid unofficial firmware unless you understand the recovery risk.

Did it help? Run SwiftSpeedTest again to check!

7. Check for Bandwidth Hogs

Other devices or applications on your network might be consuming all your bandwidth. Check for large downloads/uploads, cloud syncing (Dropbox, Google Drive), streaming services running on other devices, or even background software updates. Temporarily pause or close these.

Did it help? Run SwiftSpeedTest again to check!

8. Disable Your VPN (Temporarily)

A VPN changes encryption and routing, but there is no universal slowdown percentage. If policy permits, run paired tests with and without the VPN using the same endpoint and compare medians; never disable a required work or security VPN without authorization.

Did it help? Run SwiftSpeedTest again to check!

9. Check Your Internet Plan Limits

Are you actually paying for fast speeds? Check your latest ISP bill or log into your account online to confirm your plan's advertised download and upload speeds. Your slow speeds might simply be the limit of your current subscription.

Did it help? Run SwiftSpeedTest again to check!

10. Contact Your Internet Service Provider (ISP)

If you've tried the steps above and your speed (tested via Ethernet) is still significantly lower than your plan's advertised speed, it's time to call your ISP. There could be an issue with their equipment, the line coming into your home, or broader network problems they need to investigate.

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Evidence

Primary sources

These links support the standards, measurement methods, service disclosures, or safety guidance used on this page. SwiftSpeedTest labels its own interpretation and planning advice separately.

  • Home Network Tips

    Federal Communications Commission — Covers central router placement, 2.4 GHz and 5 GHz tradeoffs, Ethernet baselines, and simultaneous household use.

  • 13th Measuring Broadband America Fixed Broadband Report

    Federal Communications Commission — Documents download, upload, and latency measurement methods plus the effects of Wi-Fi, devices, shared use, and the end-to-end path.

  • Broadband Consumer Label Compliance Guide

    Federal Communications Commission — Defines the plan information consumers can compare, including typical download, upload, latency, allowances, fees, and network-management disclosures.

  • How To Secure Your Home Wi-Fi Network

    Federal Trade Commission — Current consumer guidance for WPA3 or WPA2, unique admin credentials, router updates, guest networks, firewalls, and risky convenience features.

Frequently asked questions

Quick answers about this topic

Why is rebooting my router the first step?
A restart can clear transient device or connection state, but it is not guaranteed to improve performance. Use the router app or follow the ISP or manufacturer restart instructions; do not press a factory-reset button unless you intend to erase the configuration.
How much faster is Ethernet than Wi-Fi?
A wired Ethernet connection typically provides faster and significantly more stable speeds than Wi-Fi because it avoids wireless interference and signal degradation common with Wi-Fi.
Will changing my Wi-Fi channel really help?
It can help when neighboring networks overlap, but results depend on the router, band, channel width, clients, and local radio conditions. Prefer the router's automatic channel selection or a vendor-supported scan, then compare tests in the same place.
When should I contact my ISP about slow speeds?
After trying basic troubleshooting (rebooting, checking connections, testing via Ethernet), if your speed is consistently much lower than your plan advertises (use SwiftSpeedTest to check), it's time to contact your ISP. There might be an issue with their equipment, the line to your home, or neighborhood congestion they need to address.

Troubleshooting topic cluster

More internet troubleshooting guides

Continue with the most relevant explainers from this topic.

  • Why is my internet so slow?Use Ethernet versus Wi-Fi tests, time-of-day checks, and traffic clues to find the bottleneck.
  • Internet connection diagnostic reportRun a full browser measurement and export a privacy-safe support report with loaded response, confidence signals, next steps, and a controlled retest protocol.
  • Internet speed vs advertised speed testCompare the median of eligible measured runs with your advertised plan and Broadband Consumer Label, then export an evidence-aware support summary.
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