I built a pc a couple days ago. The internet on the pc is basically useless. On my pc alone I get 600 ms and 0.3 mbps download. My average on all other devices is about 30 ms and 8 mbps. The pc is the standalone problem I know for a fact because I’ve tested and found it was the problem. I’m not sure how to fix it. If you have any questions I’ll gladly answer and give more in depth information if needed.