game lag

My English is not very good, I am using a translation software here. I can't play online with my friends on my Apple computer. We use the same network, but I can't enter the invitation code to join the room. Also, if I host the farm, I can't invite friends using the invitation code, while...

Hello guys I'm having an issue where every time I enter the crimson badlands I have thousands upon thousands of red slimes spawning. They make my game go from running perfectly to barely playable where I'm chugging around the map. If I use a return scepter my game goes back to running perfectly...