Review on Bionik Giganet Adapter USB 3.0 to Wired Ethernet: Nintendo Switch-Compatible, Ultra-Compact Dock-Size, Gigabit 10/100/1000 LAN Port, Enhanced Airflow Grill Pattern by Lyle Stepp

This is a good alternative as there are no usable power adapters for Nintendo Switch. I tested this on my home network and with friends. I have Spectrum 200 down (no fiber in my area yet) and it has ATT fiber. I was getting consistently low 30s on my network, which doesn't seem great on paper, but I didn't notice any lag when playing. .Though he didn't get much better than me. I'm not sure if it was user error or a setting. It was great for my needs and I recommend it to others. Note, however, that results will vary depending on the setting.