@LyonHuang Yes you can use Deco BE25 as Main Deco to get 2.5 Gbps speed and also you can use all your Deco X60 as Satellite Deco Units to create mesh network but some features will disappaear from...

@benikir You can try this beta firmware 1.2.1 which is more stable and better than 1.2.4 i'm using it now and working fine. https://community.tp-link.com/en/home/forum/topic/736042

@Elcordones You can give static ip's to your devices from your ISP router also after u use Deco X50 in AP Mode

@josp11 That's nice. Good for you

@Elcordones You can change the Deco X20 mode from Router Mode to AP Mode.

@xplodzs Hmmm i think you should go back to 1.6.1