This is the stable version, it does not have some of the updates such as Overlay or Auto Input Switcher.

Some people may have experienced performance issues relating to the BETA features. 

This should run at the best performance out of the two.

Olympus AI Rocket League Bot - BETA Client

Download and extract into a folder of any name.
Enter the Username and password provided with your key.
Press the Key icon and enter your key.