How to read stat net outpuit?

Does anyone know how to read the output from the “stat net” command? For each of the grey blocks, I am sending a compressed position and rotation over the network (then interpolation/extrapolating on the client) at a fixed 30FPS, but as soon as I have more than ~10 moving blocks at once, they start to lag on the client really bad. I don’t understand why this is the case. I’m only sending ~20 bytes of data per actor yet somehow it still seems to bog down the network

. I’m not sure what I could be doing wrong. Any feedback would be appreciated.