How does antivirus software improve pc performance?

By removing viruses that can damage pc operating files....

also by removing the running code that may bog down a system.

How does antivirus software improve pc performance?free antivirus

It really won't improve your performance, but if you get a virus and it takes up system resources your performance will go down. So basically the antivirus software is trying to keep your system running as it should. It will not increase already good performance.

How does antivirus software improve pc performance?internet

it prevents viruses and trojans which can do serious damage to your pc like delete all of your files get your email passwords or jsut slow down your pc overall
By potentially finding and removing viruses.

So your computer doesn't slow down or die.
It doesn't really ''improve'' performance but it does safeguard the current performance of your laptop.
It does nothing to improve performance. In fact it will slow down your pc as it scans files both incoming and outgoing. But it is a necessity and can save you from malicious attacks that can slow down and even destroy your data.
It is not so much that they increase your performance, but if you don't have it your computer can get affected with a virus. If in fact your computer gets a virus its performance will be affected big time!!! They block and protect your computer from harmful viruses that can ruin your hard drive.
It actually makes your computer a little bit slower than if you didnt have it. However, having a virus can kill your computer so youre better off accepting it as necessary.