Uses next to nothing. However it feel like borderline malware at this point because it will do shit without you telling it to or flat out ignore what you tell it. Oh whats that , you said no to our toolbar installation? Yea we are going to do that anyways and just to piss you off we are going to change your homepage.
In terms of an anti virus it's not bad. However due to what I just said I wouldn't use it.

Looking for opinions here. What is the #1 Antivirus for windows 10.