My TP-Link Archer AX6000 Router looses connection with my Kasa Smart Plugs and Roku Streaming Stick whenever I have Smart Connect switched on. I have to switch Smart Connect off and reboot the router

Hello there TP-link Community. I got a few problems with my Archer AX6000 Note: i tested the same results on all devices in my house. (smart tv's, ios, android. etc.) I got a 350 up and down fiber bun