I'm using a Netgear Nighthawk router in our baseme...

I'm using a Netgear Nighthawk router in our basement, because that's where the Direct Communications LAN cable is at.. The router is getting 256 mbps, but yet the wireless internet quality is worse than what we had with XFinity's 100Mb service. I thought Fiber would have been better. It seems like maybe too many people in the neighborhood all have the same internet, and Direct Communications systems can't handle the load? I'm not sure.