Server side AC is hard, yes, but it's not less effective than client-side.... As it's security by obfuscation. If you can't genuinely detect from server view the difference between an human and a cheater, that means a cheater can create a cheat controller (either hid spoof or even mechanicallly moving a mouse) that will spoof the client side too.
MSI titan line of monsters "technically a laptop, but is closer to a overkill desktop gaming monster". They all weighs like 6 kilos