Mikrotik Hotspot Active User Not Show Correct Speed

hi..anyone know why my router not show correct speed for hotspot active user?
im just reset configuration but still not works..

pls see attachment..tq

-RB951Ui-2HnD
-RouterOS V6.33.2
-ether4 = hotspot interface

anyone can help me?

I have the exact same problem…

anyone got any ideas???