It keeps lagging and it keeps crashing

Put the summary of the bug you're having here it keeps lagging and crashing.

What I expected to happen was...: I keep playing a server.
Describe what you thought should happen here
It was so anoying.
What actually happened was...:
Describe what happened here I was playing a server and it crashed.

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...