I'd also recommend looking at EsEt. They are another very well reviewed company that makes premium antivirus. A little more expensive, but equally awesome. **Note: I have seen reviews that commented on this being a bit of a resource hog as well** https/www.eset.com/us/products/smart-security/
I'd go with something like Avira. Nothing fancy, just a good anti-virus that isn't as invasive or annoying as Avast or AVG has become. https/www.avira.com/
Panda 2016 free version.
It's suddenly the best and all reviewers are giving it 100% protection certifications.
AV test and Av Comparatives gave it 100% scores while only 2 paid antiviruses usually get that....bitdefender and kaspersky. PC mag calls it the new best free antivirus which is making paid stuff pretty futile.
Must use it's cloud cleaner from the rescue option. It is the final word in removing malware nobody caught.