This has been happening to me and my friends for a few days now, we get disconnected from the server fairly regularly, we're all on Lich and it happened to my 2 friends first but they live together so they just assumed it was because they were playing at the same time but now it's started happening to me as well
My friends both usually disconnect around the same time but about a minute apart from each other and sometimes only one of them disconnects so it doesnt sound like it's a problem with their internet and I'm pretty sure my internet isnt the problem when I disconnect