I’ve had many people on without issues. Some things to keep in mind that might help.
How many animals / mobs you have in the loaded area. Less is better.
How much redstone is set up.
automated systems that require a lot loading in chunks can cause that kind of lag.
And over all world size explored. You can reduce this with some external tools (if you can get the world to download)
another option is to use a server and run it yourself instead of a realm. For more than a few people this can be a much better cost to performance solution.
I can not get this to work with any world. No add ons or with addons. On both my PC and my xbox. originally tried xbox… I have removed all resource packs and behavior packs. Nothing works
I’ve had many people on without issues. Some things to keep in mind that might help.
How many animals / mobs you have in the loaded area. Less is better.
How much redstone is set up.
automated systems that require a lot loading in chunks can cause that kind of lag.
And over all world size explored. You can reduce this with some external tools (if you can get the world to download)
another option is to use a server and run it yourself instead of a realm. For more than a few people this can be a much better cost to performance solution.