Nobody knows. Tp-Link forum admin won't answer it directly and will always try to be neutral and advise to wait for further updates. Deco users are at the mercy of the engineers, they only release as...

The preferred band is under your adapter settings. Google for your notebook model and search how to look for the settings. Or refer to youtube for videos. Plenty of it online.

@HriD Yes, always place the latest version as the main node if possible, unless there is something that there isnt working, then more often than not, should you use a lower tier one as the main. But...

@Whitesnake My subscribed speed is 500Mbps down/ 100Mbps up, not fantastic pings, but can nearly achieve close to max speed. Running on free ProtonVPN, setup with Wireguard

@captain_slocum Glad to know help you to solve out the slow capped 100Mbps speed. Don't forget to update to the latest firmwares to enjoy the newest features.

@Vitszy Have you tried using Google DNS? Cloudflare DNS? Is UPNP turned on? I'm using a Acer Nitro 5 with AC rated network card 160Mhz, ping is still within 5-10ms for speed test. Could it be that...