I found that the 'QCef.exe' service in Steamfab 5.0.0.5 will sometimes continue to run even after I exit and close StreamFab. I'm fairly sure it also has a memory leak as it will slowly consume up to 85%~95% of all available memory and my PC starts getting sluggish (I have 32gb of RAM in my system). As soon as I end the QCef.exe task using Task Manager, performance is back to normal and a bunch of memory is freed up.