Common Issues

Most speed test problems fall into a few categories. Here's how to identify and resolve them.

VERY COMMON

0 Mbps Results

Test shows zero speed for download, upload, or both. Usually indicates a connection or configuration issue.

COMMON

Slower Than Expected

Results are significantly lower than your ISP's advertised speeds. May indicate network congestion or configuration issues.

COMMON

Test Won't Start

Clicking start doesn't begin the test or shows an error message. Often related to browser settings or network restrictions.

OCCASIONAL

Inconsistent Results

Speeds vary significantly between tests. May indicate network instability or measurement timing issues.

RARE

Test Times Out

Test starts but never completes, showing timeout errors. Usually indicates severe connectivity issues.

RARE

Browser Errors

JavaScript errors or Web Worker failures. May indicate browser compatibility issues or security restrictions.

Quick Fixes

Try these simple solutions first before diving into detailed troubleshooting.

🔄 Restart Your Router

Unplug your router for 30 seconds, then plug it back in. Wait 2 minutes for it to fully restart.

🌐 Use Ethernet

Connect your device directly to the router with an Ethernet cable instead of Wi-Fi.

🖥️ Try Different Browser

Test in a different browser (Chrome, Firefox, Edge) to rule out browser-specific issues.

📱 Test on Different Device

Try the speed test on a different device to isolate device-specific problems.

⏰ Test at Different Times

Network congestion can affect results. Test during off-peak hours (early morning, late night).

🛑 Close Other Apps

Close bandwidth-intensive applications (streaming, downloads, video calls) during testing.

Diagnostic Tools

Use these tools to gather information about your connection and identify issues.

Check Network Connection

Test basic connectivity to our servers:

ping speed-test-backend.up.railway.app

Expected: < 100ms latency, 0% packet loss

Test DNS Resolution

Verify DNS is working correctly:

nslookup speed-test-backend.up.railway.app

Expected: Returns valid IP addresses

Check Port Availability

Test if HTTPS port 443 is accessible:

telnet speed-test-backend.up.railway.app 443

Expected: Connection established message

Browser Developer Tools

Check for JavaScript errors:

  • Press F12 to open developer tools
  • Look for errors in Console tab
  • Check Network tab for failed requests

Speed Test Alternatives

Compare results with other speed test services:

  • Fast.com (Netflix)
  • Speedtest.net (Ookla)
  • Google Speed Test

Connection Problems

Step-by-step solutions for connection-related issues.

Problem: Test Shows 0 Mbps

  1. Check Internet Connection: Verify other websites load and you can browse normally
  2. Disable VPN/Security Software: Temporarily disable VPNs, firewalls, or antivirus software
  3. Try Incognito Mode: Test in a private/incognito browser window
  4. Check Browser Extensions: Disable ad blockers and privacy extensions
  5. Update Browser: Ensure you're using the latest browser version
  6. Restart Device: Reboot your computer or mobile device

Problem: Test Won't Start

  1. Enable JavaScript: Ensure JavaScript is enabled in browser settings
  2. Allow Pop-ups: Make sure pop-up blockers aren't interfering
  3. Check Web Workers: Ensure browser supports Web Workers (all modern browsers do)
  4. Clear Browser Cache: Clear cache and cookies for the site
  5. Disable Content Blockers: Temporarily disable uBlock Origin, AdBlock, etc.

Problem: Extremely Slow Results

  1. Check Other Devices: Test speed on other devices on the same network
  2. Router Proximity: Move closer to router or use Ethernet connection
  3. Restart Router: Power cycle your router and modem
  4. Check for Interference: Move away from microwaves, cordless phones, and other electronics
  5. Update Router Firmware: Check for and install router firmware updates
  6. Contact ISP: Results consistently below plan speed? Contact your ISP

Inconsistent Results

Why speeds vary and how to get more reliable measurements.

Causes of Inconsistent Results

  • Network Congestion: Peak usage times slow down shared connections
  • Wireless Interference: Neighboring Wi-Fi networks or electronic devices
  • Background Activity: Other devices or applications using bandwidth
  • Server Load: Test server temporarily overloaded
  • Measurement Timing: TCP slow-start phase affecting initial measurements
  • Route Changes: Internet routing changes between tests

Getting Consistent Results

  1. Test Multiple Times: Run 3-5 tests and average the results
  2. Consistent Timing: Test at the same time of day
  3. Minimize Interference: Close all other applications and devices
  4. Use Ethernet: Wired connections provide more consistent results
  5. Choose Same Server: Use the same test server for comparison
  6. Avoid Peak Hours: Test during off-peak times (2-6 AM local time)

Advanced Troubleshooting

For persistent issues that basic troubleshooting doesn't resolve.

Network Analysis

Use advanced tools to analyze your network:

  • Wireshark: Packet analyzer for detailed network inspection
  • iperf: Command-line tool for bandwidth testing between devices
  • tracert/traceroute: Trace the path packets take to our servers
  • ping -t: Continuous ping to monitor connection stability

ISP-Level Issues

If you suspect ISP throttling or other provider issues:

  • Contact your ISP's technical support
  • Request a line quality test from your ISP
  • Ask about any known outages or maintenance
  • Inquire about data caps or throttling policies
  • Consider testing with a different ISP temporarily

Hardware Diagnostics

Test and replace networking hardware:

  • Router: Try a different router if possible
  • Cables: Test with known good Ethernet cables
  • Network Card: Test with USB Ethernet adapter
  • Power Supply: Ensure router has adequate power

When to Seek Professional Help

If you've tried all troubleshooting steps and still experience issues, consider consulting:

  • Professional network technician
  • Your ISP's advanced technical support
  • Computer repair specialist
  • Network engineering consultant

Next Steps

Still having issues or want to learn about future developments?

Future Developments → Back to Basics ←