Windows defender is by far the "best" malware software when it comes to having a light footprint. Scanning every byte of IO for malware signatures, and the ton of other heavyweight operations are a sure way to eat a ton of processing power. I have a under powered win10 tablet, and I have to remind myself to "disable" windows defender every time it goes to install an update. Otherwise what should be a 2-3 minute operation can run for 10-15 mins.
Yea I don't have a problem with it per se, I just wish it implemented any sort of improvement to reduce the hard-drive usage. Say, integrating with the OS to read the same memory as the program will (rather than reading it 2+ times: this kills the drive). Or perhaps storing a list - with hashes - of already scanned files, so it doesn't scan the entire 30+ GB windows dev kit every time I open a large project in visual studio (especially egregious because it forgets it already scanned it when I open a different IDE or say... compiler). The thing is out of control.
