WP-Insert Slows Down My Websites After Latest WP Update

Yesterday I updated the WP version on two of my websites, both using WP-Insert and both of them immediately slowed down. Turning my plug-ins of and on one by one, I quickly identified the culprit — WP-Insert is slowing my sites down.

I was forced to leave the plug-in off, so the websites could remain usable, but this is something that needs to be fixed immediately.