The issue with the server-client relationship in games is there a trade-off between latency and security required. Offload too many tasks to the server and you

The issue with the server-client relationship in games is there a trade-off between latency and security required. Offload too many tasks to the server and you end up with a game where you encounter latency where it's critical, like hit detection (and likely many others). Those extra milliseconds does make or break the experience. Not saying it's an impossible problem to solve, just that multiplayer games are operating in a time-sensitive environment.