-Physics are still calculated normally using your fps, usually ~60 fps unless you unlock your fps.
-No rendering.
-No hassle with raknet, all networking is already done for you because it's a real game client.
-Compatible with multiple game clients.
-Exploits work with it, allowing for easy bots and autofarming that use little to no resources.
-No anti-afk is implemented, user will timeout from inactivity, an exploit and a script with antiafk for example infinite yield is required.
-Unintentionally has the ability to hide the process from task manager, seems to be rare.
-In order to unhide the game client window(s) you have to use something like process hacker to edit window visibilty or manually restart/terminate the game client.