A wired connection is always better than wireless, and this will be especially noticeable for gaming. You can get a low-voltage contractor to install network wiring in your house. Electricians can fish the wires, but you really want a low-voltage person who understands networking (which electricians generally don't). Install at least two runs to every location--it won't require much more labor than running one, plus you'll have a spare for backup and possible future expansion.

If you are in a dense area with lots of neighbor WiFi systems, then wired Ethernet might provide better performance. If you are in a rural area with few neighbors, that is unlikely to help.

What level of service do you have now? How old is the equipment that you have? How old is the device your teen is using? We have Fios, (75 mbps) a bunch of devices, and a cinderblock townhouse and zero problems. Our router is on the top floor. We’re going to go up to a gigabit connection because when I went to do the annual renegotiation for a better rate, they throw in a bunch of new stuff.

I have always found that the biggest improvements come when I get a new device. iPad laggy? New iPad works beautifully.

17 yo plays games online but would like less lag. Has fios internet.

What could be done to inprove connection?
-wire computer to router (or whatever internet arrives through lol)
-wireless mesh
-next level internet

Please share ideas/thiughts.

Thank you!