Avast Making The Internet Slow: Optimizing Your Network Performance

Imagine a world where your digital guardian, Avast Antivirus, suddenly turns into a sleeping guard. That’s the issue many face when Avast inexplicably shuts down. This isn’t just about a program going off; it’s a breach in your digital fortress, an open invitation to malware. Your data, digital identity, and peace of mind hang in the balance. The sense of urgency is noticable as Avast making the internet slow. 

Avast can slow down the internet if its scanning settings are too aggressive or if it’s running a full system scan. Adjusting these settings or scheduling scans during off-peak hours can help improve internet speed.

But don’t fret! We’re not just highlighting the problem; we’ve got the solutions. From identifying underlying causes to step-by-step troubleshooting, we’ll guide you through restoring Avast to its vigilant self for Avast making the internet slow. It’s time to re-activate your digital shield!

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Understanding The Issue

When your internet starts crawling at a snail’s pace, you might not immediately think of your antivirus software as the culprit. But surprisingly, programs like Avast can impact your internet speeds. Antivirus software, while essential for protecting your device from malware and cyber threats, can sometimes interfere with your internet connection. This interference usually stems from the real-time scanning and monitoring features designed to keep you safe online. Learn more about how antivirus programs can affect internet speed here.

Does Avast make your computer slow? Avast, renowned for its comprehensive security measures, offers various features that might contribute to a slower internet. For instance, its Web Shield function scans internet traffic in real time to block malicious content, which can add extra load and latency to your connection. Similarly, Avast’s background updates, though crucial for security, can consume significant bandwidth, leading to slower internet speeds, especially if your connection is already on the slower side as Avast making the internet slow.

Understanding how Avast interacts with your internet connection is vital to balancing optimal security and internet performance. Explore which specific Avast features might slow down your connection and why.

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Common Causes For Internet Slowdown Due To Avast 

Diving deeper into Avast’s features, we find a few usual suspects contributing to internet slowdown:

  • Web Shield: Avast’s Web Shield is designed to scan and filter web traffic to prevent malware and phishing attacks. This real-time scanning can slow your browsing, especially if visiting sites with heavy content or downloading large files as Avast slowing down internet.
  • Background Updates: Avast frequently updates its virus definitions and software to provide robust protection against the latest threats. While running in the background, these updates can consume a significant portion of your bandwidth, resulting in slower internet speeds.
  • System Compatibility: The impact of Avast on your internet speed can also vary depending on your system’s specifications. Older systems with limited processing power or RAM might need help to run Avast efficiently, leading to sluggish performance, including internet browsing.
  • Avast’s Firewall Settings: While a firewall is crucial for blocking unauthorized access to your system, overzealous settings in Avast’s firewall can interfere with regular internet traffic, inadvertently slowing down your connection.
  • Other Avast Security Features: Features like Email Shield, which scans incoming and outgoing emails, and Software Updater, which checks for updates to your applications, can also contribute to reduced internet speeds. For a detailed explanation of these features and their impact on internet speed, check out this comprehensive guide.

By understanding these common causes, you can better manage Avast’s settings to balance adequate protection and maintaining a fast internet connection. Let’s explore how to optimize these settings and minimize the impact on your internet speed for Avast making computer slow.

How To Improve Internet Speed?

If Avast is slowing down your internet, don’t worry – there are ways to optimize its settings for a faster connection if Avast making the internet slow:

Optimizing Avast Startup Settings:

  1. Open Avast and go to ‘Menu’ > ‘Settings’ > ‘Troubleshooting.’
  2. Turn off the option ‘Enable Avast self-defense module.’
  3. Restart your PC. This prevents Avast from conflicting with Windows services at startup, potentially speeding up your system.

Adjusting Avast Web Shield Settings:

  1. Navigate to ‘Protection’ > ‘Core Shields’ in Avast.
  2. Find ‘Web Shield’ and adjust its sensitivity settings. Reducing the intensity can improve speed, but be mindful of the security trade-off.
  3. Consider unchecking the option for HTTPS scanning if the ‘Avast is slowing down my computer’ problem is significant during web browsing.

Managing Avast Background Updates:

  1. In ‘Menu’ > ‘Settings,’ select ‘Update.’
  2. Change the settings for virus definition updates to manual or less frequent intervals.
  3. Schedule updates for times when you’re not using the internet heavily.

By carefully adjusting these settings, you can minimize Avast’s impact on your internet speed while maintaining essential protection. For a step-by-step guide on these adjustments, visit this link.

Additional Tips And Tricks 

Is Avast slowing down my computer? Beyond tweaking Avast, there are additional steps to enhance your system’s performance:

  • Clearing Windows Cache: Regularly clear your Windows cache files to boost system performance. This can be done via disk cleanup tools or manually from the temporary files folder.
  • Updating Windows And Avast: Ensure you’re running the latest versions of both Windows and Avast. Updates often include performance improvements and bug fixes.
  • Router Configurations: Check your router settings for configurations that might conflict with Avast. Updating firmware and ensuring optimal settings can improve compatibility and performance.
  • Device Space Constraints: Ensure your device has enough free space. Limited storage can hinder Avast’s functionality and slow down your system. Regularly clean up unnecessary files and uninstall unused apps.

By incorporating these additional measures, you can further enhance your system’s efficiency, ensuring that Avast runs smoothly without compromising your internet speed.

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Alternative Solutions 

If the initial steps don’t significantly improve your internet speed as Avast making the internet slow, consider these alternative solutions:

  • Modifying Avast’s Scan Frequency: Access the Avast dashboard and go to ‘Menu’ > ‘Settings’ > ‘Protection.’ Under the ‘Scans’ section, adjust the frequency and depth of Avast’s automatic scans. Opt for less frequent and lighter scans to reduce resource consumption.
  • Managing Background Applications And Extensions: Close unnecessary background applications that might be using internet bandwidth or conflicting with Avast. Review and turn off browser extensions that may interfere with Avast, especially those related to web security or traffic monitoring.
  • Reinstalling Avast: A fresh install can sometimes resolve persistent issues if all else fails. Uninstall Avast using the Avast Uninstall Utility or through the Windows Control Panel. For instructions on reinstalling Avast, see this article.

Download the latest version of Avast from the official website and install it. This can help eliminate any corrupted files or misconfigurations causing the slowdown.

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Why is Avast slowing down my internet connection?

Avast can slow down your internet due to its Web Shield function, which monitors network activities and can affect internet speed. Other factors include insufficient RAM, outdated Windows or Avast versions, and CPU-intensive Avast features.

Can Avast function without an internet connection?

Yes, Avast can function without an internet connection. You can use an offline installer to install an offline antivirus version of Avast that doesn't require internet access.

Is Avast disadvantageous?

While Avast offers robust protection against malware, it may slow down your PC and internet and mistakenly block some harmless applications. However, it remains one of the top antivirus applications for PC security.

Can an antivirus prohibit my internet access?

An antivirus like Avast doesn’t block the entire internet but may prevent access to certain malicious websites. It can slow down internet speed due to background activities and scanning functions.

When was Avast launched, and what is its latest version?

Avast has been available since 1988 and has continually evolved. The latest version of Avast was released in 2023, and you can find all versions on the Avast website.


Throughout this guide, we’ve explored various ways to address the Avast making the internet slow. From adjusting specific Avast settings like Web Shield and background updates to managing your system resources and router configurations, each solution offers a pathway to optimize your experience. Remember, the goal is to balance robust security and efficient internet performance perfectly. 

Customizing your Avast settings can lead to a smoother, more seamless online experience without compromising digital safety. Experiment with these suggestions and find the best setup for your specific needs and system capabilities.


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