Defender's presence on my XPS 2015 is the difference between a useable laptop and an eternity of hourglass cursors. 3rd party AV generally has better hit rates

Defender's presence on my XPS 2015 is the difference between a useable laptop and an eternity of hourglass cursors. 3rd party AV generally has better hit rates and the good ones are dramatically less demanding of system resources (happy with NOD32 here)