Hi I work for a small plant nursery that is split into two parts by a street. The main side of the nursery has the majority of the green houses. There is a main switch in the office and from there we have a series of switches and access points to get internet out to the green houses.
The internet speed stays at a constant 80Mbps until it goes from one green house to another. From there it drops to 8Mbps and stays like that for the rest of the green houses. On the other side of the street, all the green houses are able to maintain the 80Mbps speed which they get from a switch located in the lab. I was wondering what could cause such a big drop from green house to the next.
Edit: I have added a map of the nursery. The red arrow is where the connection speed drops. The stars mean there is a PoE Box or Switch there. All the circles are the access points. Each green house either has grapevines or almond trees.