ASUS RT-ac86u is a very good wifi 5 router so if you still have deadspots then you'll probably want to look at a mesh system (for Wifi) or powerline plugs (ethernet).
Wifi 6 is an upgrade on wifi 5 but you need to have wifi 6 devices as well as the router. Most mid-high end laptops and phones from the last 2 years will have wifi 6 but most have lots of fire sticks, chromecasts, smart tv, alexas etc which are wifi 5.
Wifi 6 is an upgrade on wifi 5 but you need to have wifi 6 devices as well as the router. Most mid-high end laptops and phones from the last 2 years will have wifi 6 but most have lots of fire sticks, chromecasts, smart tv, alexas etc which are wifi 5.