Friend developer, for 3 days back in my wordpress sites were with your Administration Panel Very Slow I had a big fight with my service provider web host thinking the problem was with them, but was not, I was sick in can not find a solution.
I use almost 25 active plugins on each of my sites, and none of them had this error slowness in WP Administration Panel. I disabled your plugin on each site and everything returned to normal.
I believe that other users of your plugin is having this problem, check ASAP, because the plugin is causing a big slowdown in WP Administration Panel.
Your Plugin is a great safety feature, but by this time need urgent repair.