Need Unity Expert For A MultiPlayer Game

We are developing a multiplayer tower defense game in Unity using DarkRift 2 we take inputs from the clients, process it in the server then update it on client side but we are experiencing crashes, bugs and performance drops. So we need someone to fix the project, we will send you the project and you will fix the crashes and add helpful commentary on why they happened and what to be careful of going forward that is the job.