First, I am loving the blog and support offered for members here!
From your blog here: https://premium.wpmudev.org/blog/how-to-find-out-which-plugins-are-slowing-down-your-wordpress-site/ I installed P3 and scanned my site.
According to P3, WP defender take 26% of my total plugin load time adding 3+ seconds! That seems really high. Jetpack takes the second most time but right below the report it says some plugins will report artificially high times (mentioning Jetpack as an example). I am hoping that is the case for Defender as well but don't know how to find this out? If Defender really does add 3 seconds to my load time there is no way I can continue to use it.