I have 2 warehouses with multiple businesses. So we use a M5 for the main router hooked to the modem.

Then we have a deco M5 as access point and then 2 more decos hard wired as added mesh units. I seem to be getting internet fine but have some weird drop outs. Wondering if this is to do with running a deco ap behind a deco router and then attaching 2 more decos as mesh to the ap instead of router deco.

The issue is I want 4 different said and logins for the buildings.

Any thoughts?