I noticed that file sharing on my home network was capped at 100mbps. My internet was fine and running at 1gbps on all devices. This was my network before:

Comcast > Arris G34 Router > Devices

I decided to try this configuration instead:

Comcast > Arris G34 Router > TL-SG105 Switch > Devices

This got my file sharing up to 1gbps. This appears to prove that the router was bottlenecking file sharing speed in the old configuration.

I could just leave the switch in the network but there really isn’t room for it in my network panel. It would be better to just prevent the bottlenecking on the router but I am unsure how to do this.