Weird connection dropouts?

Hi guys I was just wondering why my computer when say loading a video, then surfing the web the video jams (stream) and thats it. The Qos management is horrible. But here is the thing I recently connection up a to another computer with same firewall with same basic settings, but defense was set to safe mode instead of mine which is paranoid. I have a 5m ethernet cord and the other has a 2m ethernet cord, they are both connected to the same modem. The other computer can multitask internet loading.

So how come I cant on mine?

First make sure your system is free of malware.Follow lWhat You Need To Know About Removing Infections and Securing Your Computer for reference.