Save Empire Earth

I bought a new TP-Link AX5400 router and it seems to not like my devices? I have the wifi and hardwired devices on my network. I am getting a full 1gig up and down so my signal strength is strong. I have a network switch plugged into my router in one of the ethernet ports, in the switch I have a ps4,ps5 2 TVs and my Mac Mini, it seems as though sometimes my Mac Mini will not work through ethernet only wifi sometimes. Apple doesn't know why..? I also have an issue with my iPhone 14 pro not wanting to connect to my wifi.. my phone will say connected but then in orange says "no internet connection" have to restart either my phone or the router to get them to both connect and talk to each other. any ideas on what is going on?

I have the same problem with my tp-link device. Radom devices, not all at once (Mac, Fire TV, Roku TV, Alexa, etc…) will be kicked off WiFi… Internet connection is solid. Tried turning off “Smart Connect”, separated 2.4 and 5 GHz with different passwords…no help.