Do you think that Minecraft gets faster when you have fewer worlds? Of course, the decisive factor is how much space the world consumes… But have many worlds with large memory consumption… If fewer worlds Minecraft should make faster, I could meanwhile move unneeded from the world folder and if necessary, back into it…
No, worlds are loaded only when you enter them.
No. This has no effect on the gameplay, at most on the time it takes for the worlds to be displayed after clicking on "Single Player".
As long as you do not mean bungee cord server or mutliverse server, no. Because Minecraft starts only one world at a time
OK… No servers… But at realms? @GYmmm
Ok then it fits yes✌️
OK thanks
Neither
