Source Build of UE4. How to compile game without compiling engine?

I’m trying to use this version for mulitplayer but every time I want to compile any code it compiles over 600 actions insetad of the usual 8 in the epic games launcher version of UE4. How on Earth do I get normal compile times again? This is practically impossible to work on like this.

For some reason, over night CTRL B which compiles the game project now only compiles the 8 actions or so. So I suppose if anyone else has this issue in the future, try restarting your computer.