To troubleshoot possible causes of lag while using the internet, try the following steps:

1. Check your internet connection speed: Run a speed test to see whether you’re getting the connection speed you’re paying for.
2. Check for hardware/software issues: Make sure there are no outdated drivers or other programs that could be causing issues.
3. Check for background processes consuming bandwidth: Use another device on your network to determine if any of your connected devices are using too much bandwidth.
4. Check for ISP throttling: Contact your ISP to make sure they are not throttling your connection speed.