Yep, in 7 years of running the antispware version of Window Defender, I only saw one detection, which it quarantined. Malwarebytes Free, in that seven years, saw and detected hundreds of them. My jaw literally dropped to the floor when I saw the warning. Had to do a double-take to look at the warning box again as I did not even recognize it and did not know at first what it was.

The real-time protection of WD is poor because of that, and it also affected how fast certain programs would open when I initiated them.