Speedstream 5200

[Saxon2]

I have recently been experiencing problems with my internet connection. When I play a game, my pc will lock up for about 3 seconds then unfreeze and I will have warped to someplace I was before I froze and I have had this problem when I'm trying to watch videos on my pc online, the videos will start buffering and then stop suddenly and won't start buffereing again for about 5 minutes after it stopped. This has been getting very annoying and I haven't found any way to fix it. If anyone know what's wrong with it could you please tell me! Thanks