eero Pro (2nd generation) internet or Wi-Fi is slow

The checks in more detail

The eero Pro has Gigabit ports, so a wired computer tops out at about 940 Mbps. The eero community thread on coverage for a gigabit plan discusses how Wi-Fi 5 speeds drop with distance and walls, and that a large home needs a wired backhaul between units to keep speeds up, because the units use a dedicated band to talk to each other, which halves with each wireless hop. For Wi-Fi, test close to a unit and then in the slow room. The eero Pro is a Wi-Fi 5 system, so even at close range it will not match a Wi-Fi 6 or 7 system, and devices with older adapters reach lower speeds.

If speeds fall in the slow room, add a unit, ideally wired, or move one to a point between the gateway and that room, about two rooms from the gateway, in the open and off the floor. Check the number of devices and any large uploads or backups that fill the upload speed and make the whole network feel slow. In the app, look at the connection details. Update the eero software; the original Pro receives updates for a limited time. Restart the network in order and test again. Avoid placing units near microwaves, metal shelves or behind televisions.

If the eero Pro is several years old and the speed is far below what a newer system gives on the same plan, an upgrade to a newer eero may solve it, as the radio and processor are older. Check the placement of the gateway unit: it sits at the modem, which is often in a corner, a cupboard or the basement, and the speed to the rest of the house depends on where the next unit is. Moving the gateway is not always possible, but placing the second unit in the middle of the home, on a shelf, makes a large difference. Replacing a unit that is hidden behind a television or in a cabinet with an open position often gives more than any setting.