Problem with my 1.18.2 modded server

I've run into a problem with my 1.18.2 modded server, a single server tick took over 60 seconds, max should be 0,05. The client can't keep up and logs you out, but because the server can't keep up with all the Data, once you log out of the server, it won't read that because of all the Data, so it looks like there's still players. My guess is that there is something that isn't optimized, any suggestions on how to solve that?