You are right about the wired connection. Gamers learn this. I have almost given up that you can write about this. That is, folk seem to have to try WiFi and see if fail to understand.

If your WiFi is solid, that's good too.

The best is the laptop to the modem+router (Cisco). Any other setup show show a little more delay.

Since we can go 100 Meters on Ethernet why would we need the DIR 600?