Yes it is very light. They released new version released just over a year ago which is only using cloud signatures that is lighter than old versions. Also, they have greatly improved the detection rate. It's a product I would recommend these days, if you don't mind that there is very little to configure, whereas in the past I wouldn't have.Right now on a very old laptop I'm using McAfee and it doesn't slow anything down at all, so on a gaming PC it must be super lightweight.