@mineryyyyy
Find a right //./COMxx name for LTC only is a pain, so that is why we developed a GUI for that. GUI uses a script to detect miners and ports, than use the right port automatically.
Is there anything I can do to get the GUI to be more stable with LTC only? I am running 55 DualMiners and I would say an average of 6 of them go idle after 10 minutes or so. The only thing I can do is to restart the software/computer and then they all mine fine for 10 minutes. I tried setting the LTC Delayed Start to various numbers but it didn't seem to help anything. Other than the few going idle these things run great - nice and cool 70k all day.