I would like to know is that a good idea. I would like to setup One Core Moodle (as IdP and Master), with 4 different instances of Moodle with the same code. On server will be used only for php, caching php with opcache, another one will be for databases (postgresql).
In each one Moodle will be 5000 of users. Is it good idea for making better performance than install one Moodle?
Last time I had problems with quizes performance, and entering courses with a lot of different activities.
What do you think?