If you switch to Unicom, I feel that your problem should be solved. Of course, this is just my personal opinion, not absolute! It also depends on your geographical location. Northern Unicom is better than radio and television! The card you are talking about should be that the radio and television uplink can't reach the bandwidth, so the reason of your computer system can't be ruled out! The radio and television in my home are similar to what you said, but none of them are so fantastic! I hope my answer can help you! ?