Yeah you can always go for another security program. I would recommend MalwareFox as it consumes zero system resources. At least as long as it's not scanning for malware.
Do keep in mind that this is an Anti-Malware and not an Antivirus.
So that means it's not as powerful as McAfee then? Since it's only search for malware and not system virus?
Oh no you misunderstood. It means that it's different. The two of them are focused on their own field of expertise which means that they kinda remove different types of malware. Watch this video to get a better idea of what's going on.