I've experienced problem with delay of SCS start. Startup screen got frozen for 25 seconds while initializing.
After contacting support I was presented with solution.
SCS was checking COM3 and COM4 for devices. In my case com_ports are ports over bluetooth connection. In BT paired device list (windows settings) my headphones was paired but not connected and that is cause of problem. I've removed device from list and problem was gone.
Maybe someone will find this useful.
Alex.