So I got fiber installed yesterday and it works fine except for one thing. When using WiFi I get the full speed of 350 mbps. But when I connect my pc to my router with a pan cable(cat6) it locks at 100. I have no idea what to do I called my isp so many times and they’ve been of no help.


It may have just been a defective or improperly made cable. Even cat 5 can support gigabit links if manufactured properly.
What brand was the store cable? How long? Can you share pictures of it, especially of the plugs showing the wired inside?