Antivirus software does slow down your point of sale system, fortunately, there are a few things you can do.
Antivirus software are made to work all the time in the background where they do take up processing power, so slowing you down. Sometimes they slow down a system so much that the computer is unusable and there is no pattern to it, on some computers some software runs fast and on others it runs slow.
Firstly we do not recommend any antivirus software that is not reviewed on these two sites av-comparatives and av-test we would recommend that you only use these antivirus software packages. As there is a lot there, it is hardly much of a limitation.
The first point to do is to test whether it is the antivirus software that is slowing you down as there are many other causes for slow speed. Try turning off the antivirus software for a while and see what speeds you are getting. Just be careful while the antivirus software is not running.
If you are sure its the antivirus software, you may want to try this
) Try a different antivirus software, in my experience, this is the quickest and easiest, as a rule, Avast and Microsoft Defender are generally the fastest on slow machines. If you are running XP, please do not use Microsoft Defender. You will find large variations in speed on different computers so you will need to find the software you are comfortable with, that runs fast.
) Do not run more than one antivirus software at any time.
) Try and limit as much as possible running your antivirus software at night when you are not using it.
) Most antivirus software have settings that are worth going through, you may need to go through these settings. Okay, you may reduce your security a little but at least you can work on your computer. Unfortunately, they are all different so we cannot go through them here in detail.
) If all fails, ask the antivirus company, most have forums where the public can ask questions and they all have a support team.