It performs well as a basic mesh wifi system, so long as you don't mind being forced to use two different smartphone apps for its administration.

and so the reason for switching to Samsung’s mesh solutions was mainly because of the SmartThings hub (which I planned to add anyhow) plus the fact that the Apple Express units lack WiFi AC support and limited to 100Mbps Ethernet

these mesh network devices create a seamless wifi network in your home or office that is all the same, the devices see it as the main network not an extender

WiFi also works well for all my devices including my Pixel 2 XL smartphone and iPad.

BUT other than that .... the system is blazing fast and provides PERFECT WiFi blanket across my entire house

I live in a duplex apartment (1600 square ft.) and for a good solid WiFi covarage I’ve been using 1 Apple Extreme and 2 Apple Express units since 3 years

The wifi extender function works great