I'm not sure what you mean. If i turn off other Deco's I'm not sure I will have good reach from the Main Deco unit. Shouldn't each Deco work independtly in AP mode connected via Wifi?

I see same issues on my Deco x60s. I stream games using Stadia and parsec, installed Deco over weekend and every minute or so it stutters. If I ping, I see it also goes from 14ms all the way to 300ms...