ISP router into an Asus rt-68u with cable connection to 2 other asus routers on other floors of the house. Uses Asus proprietary aiMesh tech to configure them

ISP router into an Asus rt-68u with cable connection to 2 other asus routers on other floors of the house. Uses Asus proprietary aiMesh tech to configure them as one. They work well-enough, but some of the advanced features of their firmware like QoS and NAS are garbage so I run vanilla settings. I also have a pi4 for NAS and Minecraft world, and a 4 port tp-link switch my entertainment unit so all the hardware there is wired.