divided by 2 my CPU load

all in the tittle. Note that I have a lot of posts & metas.
VERY GOOD.

GUI is excellent on what it does, and how to revert.

Tip for shared cPanel users: i could not add the key to post & meta tables because timeouts (other tables where long, but OK). And on my shared hosting, no CLI on cPanel … except if you go to Softaculous area that provides a CLI access in its menu –> less that 3 seconds to generates the 2 keys that would timeout otherwise !!!