Does Antivirus Slow Down Your PC?

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Using an antivirus program can be useful. It helps to protect your PC from viruses and other forms of malware, but it is important to know if it can cause problems, or slow down your PC. Luckily, there are a number of different options for antivirus software. These include Avira, Bitdefender, Microsoft Defender, and Kaspersky Security Cloud Free.


Having an Avast antivirus can cause your PC to slow down. The software uses up a lot of CPU and HDD/SDD space, and has been reported to cause lag. Luckily, there are many ways to speed up your PC and get it back to its full speed.

One of the most important things you can do is upgrade your computer’s memory and disk space. This will allow it to operate faster and more efficiently. Also, transferring your files from your old PC to your new one can increase the available space on your hard drive.

Avast comes with many cool features, but one in particular is the Avast Browser Cleanup. This feature can identify and remove unwanted or unused files. Using this feature, you can clear the clutter on your PC, and free up space for newer files.

Aside from the standard antivirus features, Avast also provides a feature called CyberCapture that scans every file on your PC. This feature works in a similar fashion to a malware scan, but it is more robust. It can detect more files, and can even identify low-rated files.

Another cool thing about Avast is its ability to run faster than the default Windows 10 services. This is largely thanks to its large database. But, Avast has also been known to slow down your PC, particularly if you have a lower-end PC.

As with most software, Avast has its downsides. Its aforementioned features may be the best in the world, but they also can cause your PC to lag. For instance, you may notice that Avast slows down your PC’s performance when you open too many files.

Kaspersky Security Cloud Free

Using Kaspersky Security Cloud Free is a quick way to protect your computer from malware. It features antivirus protection, a password manager, and a VPN. In addition, it provides an adware cleaner, and can remove dangerous websites from your computer. It’s also one of the fastest antivirus programs on the market.

Kaspersky’s user interface (UI) is quick to navigate, and it has plenty of customization options. There are small icons next to each feature, making it easy to customize the experience. There’s also a live chat option, which will help you locate articles or answers to questions.

Kaspersky Security Cloud Free also has a gaming mode. This lets you pause scans while you play. There are also specialized defenses against ransomware, and a password manager.

Kaspersky also includes a network monitor, which shows all applications that are running on your computer and the internet connection. It’s a useful feature for malware infections, but it doesn’t have the most powerful features.

The interface is fairly well organized, and it takes a little getting used to. The Kaspersky Rescue Disk can be downloaded from the Kaspersky website, but it doesn’t include most up-to-date tools.

Kaspersky’s Notification Center makes it easy to turn on important functions. The system tray icon lets you pause or stop Kaspersky’s protection, and it opens an on-screen keyboard. You can also use a virtual keyboard from the Privacy menu.

Kaspersky Security Cloud Free is free to download and use. It includes a limited VPN service, and it works with Windows 7, 8, and 8.1. It’s also compatible with Mac systems, iOS, and Android.

The Kaspersky Rescue Disk is a great feature that can help you clean up a computer that’s been infected with malware. It can be downloaded from the Kaspersky website, and it can be installed on a USB drive. You can also use the feature to boot your machine in a clean Linux environment.

Microsoft Defender

Despite being a staple of Windows, Microsoft Defender may be the cause of a number of PC slowdowns. The problem stems from the fact that Windows Defender may be utilizing CPU resources to perform scans on files accessed by the user.

There are a number of ways to combat this problem. The first and most obvious is to install a different antivirus program. If you are using a third-party program, consider uninstalling it. This will improve the performance of your PC by reducing CPU usage.

Another trick to get your PC running at peak performance is to perform a disk defragmentation. Defragmenting your hard drive will make data closer together, which in turn will reduce the amount of time it takes to access it.

If you are still having issues with Windows Defender, you may want to disable it. To do this, follow these steps:

The first thing you should do is find the Windows Defender directory. This is a vital Windows component, so you should only delete it after creating a System Restore point. If you want to disable Windows Defender without deleting the directory, you can use the Group Policy Editor.

The second thing to do is to make sure the Windows Defender folder is not corrupted. This can be done by running a SMART-command.

Finally, you may want to turn off the periodic scanning option. The AMSX (Antimalware Service Executable) is known to consume CPU resources during scans. If you want to avoid this, use the Task Scheduler to schedule scans.

Microsoft Defender may not be the most efficient tool for defending your PC from malware, but it can work well with your favorite antivirus product.


Whether you are using Windows or Mac, Avira has a wide range of features that provide complete protection against viruses and malware. It is a very popular antivirus product that is available on the market. However, it can cause performance issues on some systems.

The Avira Antivirus has two main tools that you can use to speed up your computer. First, the PC Cleaner tool automatically scans your hard drive for unwanted files. The second is the Smart scan feature, which checks your system for malicious programs.

Avira offers excellent protection against online threats, including viruses and ransomware. Its cloud-based malware scanner only takes up a small amount of CPU power.

Avira also offers an advanced firewall that can be customized with whitelists and other settings. These tools make setup and control of your system easy.

Avira offers a free plan that can be downloaded and installed on your PC. It provides protection against malware and spyware, as well as offers excellent system tuneup tools. It also has a handy web extension that can block ads.

However, the Avira Antivirus can slow your PC down, especially if you use it with a large number of applications. It can also cause performance issues when it is running in the background. It can also affect your PC’s performance if there is dust on your cooling system.

Avira has user-friendly apps for Windows, Mac, and Android. You can also download an iOS app for use on your iPhone or iPad.

Avira is a popular antivirus brand that protects your PC and smartphone from viruses and malware. It offers a free plan, and three paid plans. The paid plans include a money-back guarantee. You can also contact Avira customer support to fix any issues that may be slowing down your PC.


Getting a full disk scan from your antivirus software can slow down your PC. While it is an important security measure, a full scan can also take up a lot of resources. You can do some things to fix this, such as running scans only when your PC is idle, disabling automatic media downloads, and disabling background programs.

Bitdefender has a full suite of tools that can improve your PC’s performance. These include a Bitdefender Registry Cleaner, which cleans up Windows registry. You can also use the Autoruns tool to identify programs that you don’t need.

Other things that can slow your PC include malware infections, out-of-date software, and insufficient hardware. Choosing an antivirus that doesn’t take up a lot of RAM should minimize this problem.

You should also make sure that your OS is up to date. If your computer isn’t running the latest versions of Windows, it can have a negative impact on your computer’s performance. It’s also important to uninstall any programs that you don’t need.

Lastly, you should make sure that your antivirus software has a proper scan schedule. Some antivirus software can eat up a lot of system resources, so it’s important to schedule your scans for times when your PC isn’t in use.

The best antivirus software features include a low-impact quick scan, advanced cloud-based scanners, and smart scanning technology. All of these should help fix the most common performance issues.

You can also speed up your PC by disabling unnecessary background programs and by using a system optimizer. These can remove junk files and programs, which can free up disk space and improve device performance.

You can also protect your home Wi-Fi network and your email accounts with Bitdefender. This antivirus is designed to run on any PC, and has a full suite of security tools that can protect against spyware, ransomware, and rootkits.

By Bullguardreview