RSSI goes up and down all the time for a variety of reasons. That's not really an indication of network speed though, only link speed. You can have a wifi conne

RSSI goes up and down all the time for a variety of reasons. That's not really an indication of network speed though, only link speed. You can have a wifi connection over several km's if nobody else has wifi routers (in real life, they do, so you can't go much further than your house) and still have a really good link speed (from experience). Network speed is a function of link speed AND the success of packets to reach you. When you are on wifi, your device gets a very tiny slice of time to send packets. If you have more devices, your device gets less time to send packets. Further, a "loud router" nearby (or self-interference ... or radar in 5G space -- or a microwave, or Bluetooth in 2G space) can cause a frame to be interfered with and never be received. Thus it has to be retransmitted. RSSI is only a very small part of your overall network conditions and doesn't really tell anyone anything.