computer running slow

What do you mean by long running scripts? Could you include a screenshot?

And if you suspect you have a virus, downloading Cox Security Suite now, after the fact, probably won't help any, and might complicate things. My default suggestions is a program called Malwarebytes, but if I know more about the infection I might be able to give more specific advice.

Could you be more specific on exactly what's happening and if it's on a web page, what web page? People are happy to help but need a better explanation of what's going on. And preferably in a step-by-step what you are doing to get these "long running script" issues, so that someone can try to reproduce the problem.