How much should I limit channel width? For example: the 5 GHz is at 80 MHz by default, would I lower it to 40 MHz? Or go even lower to 20? I live with other people so would lowering the channel width cause problems for everyone connecting to the internet?

It shouldn’t but I was checking to see if I had the same issues on pc that I saw on Steam Deck.

Hi, no the router has not been moved recently. With the way this place has been built there aren’t many good places to put the gateway. I got an extender too but that doesn’t seem to help. What program do you recommend for the computer to see how congested these two bands are?

Thanks, I’ll force the steam deck to only use the 2.4ghz band with this wifi and see how that works out. This place put the gateway connection in one corner and I’m on the other side of the house.