Been using it for more than 5 years

This is a set-it and forget-it type of plugin. I have been using it for 5+ years and it just works, never had conflicts, never caused any grief with my a-typical environment.

Takes a bit of playing around with the settings, but in the end I got it to work.
It is multisite capable, and to my knowledge works on a per-site basis. (Haven’t tested network activated)