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The antivirus program that you installed on your computer will load every time the machine boots or reboots.

This happens so that the computer will continue enjoying unparalleled protection from different types of threats at all times. The loading process will consume a significant portion of the computer’s memory – an event that is not limited to the antivirus program alone but occurs with all other types of software.

Insufficient Memory

Most computers that slow down after installation of an antivirus program often do so because of insufficient memory. Such a computer will suffer a significant drop in its overall performance. While modern computers boast of plenty of memory, this does not mean that they will be able to avoid slowing down after installing an antivirus program. Modern computers are also susceptible to slowing down because the antivirus program has to scan it thoroughly for viruses.

No computer can continue functioning optimally when the antivirus program is running. If you notice a significant drop in speeds and performance, stop the antivirus so that it does not continue scanning the computer. Next, change the settings so that the antivirus program will scan the computer at specific intervals. You can do this in the Notification Area on Windows, which is at the bottom right corner of your screen.

Guilty Antivirus Programs

Some of the antivirus programs that could slow your computer down include the following:

  • Avira
  • Bitdefender
  • BullGuard
  • Avast
  • AVG
  • Kaspersky
  • McAfee
  • F-Secure
  • ESET

Work Affected by the Slowdown

You will experience the slow down when attempting to download different files from online sources. The computer will also slow down as you attempt to open different applications, which include a file. When copying and pasting files, the computer might also slow down when the antivirus program is scanning the machine. The computer tends to slow down when you attempt to launch websites or install applications as well.

The slowdown takes place because the antivirus program will constantly be scanning the web traffic, in addition to emails. The program will not stop scanning file transfers regularly, thus causing the machine to slow down. Each type of antivirus program has a different impact in terms of the level at which it slows the computer down. With some programs, the slowdown will be massive. With other programs, the slowdown will be subtle.

Despite the slowdown, you should never use a computer if it lacks the appropriate protection that an antivirus program provides. You should also remember that installing more antivirus programs in your computer would slow it down. After all, your computer only needs a single security program at a time. Your computer also needs one antimalware program. Be observant and take note of performance drops.