I have set up wired ICS LAN between my main computer and my laptop. My main computer is running on Windows XP with Panda antivirus. My laptop is running with Windows 7 and no firewall (so there is no conflict). Everything works fine. However when I run programs on my laptop such as Spotify and Call of Duty 2, after about 5 minutes of running them my laptop says limited or no connectivity and after 20 minutes it fixes itself. How can I fix this problem?