Windows 8 and 8.1 are known to be problematic not just for the GS911, as it is not a business operating system I dont normally have anything to do with it
I do know turning off sleep in the GS911 and sleep mode in the PC USB settings will help, it is mentioned in other threads here, suggest searching for them
Re the IP No, is it an IP No for your WiFi network or the 10.0.0.1 No for the GS911 in Adhoc mode ?