Personally, I would recommend picking up a USB C to Ethernet adapter. I don’t use WiFi for any downloads over 4 GB, I just plug it in wired and let 'er rip. As for file transfers I either use a USB drive and move things along with that as the transfer medium, or I copy my files to my NAS and then that can be the intermediary.
Spider Man Miles Morales, Fallout 4, Celeste, Ori and the Will of the Wisps, Hollow Knight, and Lego Star Wars TCS. I’m set for a while, or at least until the winter sale!