Common Causes of Slow Networks

Slow internet can be caused by bandwidth saturation, DNS issues, router problems, or ISP throttling. Here's how to identify and fix each.

Step 1: Test Your Speed

Run speed tests at different times:

  • Use speedtest.net or fast.com
  • Test during peak and off-peak hours
  • Compare results to your ISP plan speed

Step 2: Check for Bandwidth Hogs

Use Resource Monitor in Windows to identify processes consuming bandwidth:

  1. Open Task Manager
  2. Go to Performance tab ? Open Resource Monitor
  3. Check Network tab for high-usage processes

Step 3: Test DNS Performance

Switch to Google DNS or Cloudflare DNS:

Primary DNS: 8.8.8.8
Secondary DNS: 8.8.4.4

OR

Primary DNS: 1.1.1.1
Secondary DNS: 1.0.0.1

Step 4: Update Router Firmware

Outdated router firmware can cause performance issues. Check your router manufacturer's website for updates.

Step 5: Check for Packet Loss

ping 8.8.8.8 -n 100

If packet loss exceeds 2%, contact your ISP or check your network cables.

Quick Wins

  • Restart your router and modem
  • Use wired connection instead of WiFi when possible
  • Position router centrally and away from interference
  • Disable unused devices from your network