I have enabled option
# Line from my config
${color grey}Rate:$color ${wireless_bitrate wlp1s0}
in my config.
But i noticed that it is not updating properly.
Here is screenshot from NetworManager

It seems that conky checks download bitrate only an connection and does not update this value.
How can i enable update of this value? Also question: wich option shows ethernet connection Rate(speed)?
UPD
From comment @WinEunuuchs2Unix
Command iwlist shows all time one fixed speed.
Here is example with watch
Every 1,0s: iwlist wlp1s0 bitrate Sun Apr 8 18:58:12 2018
wlp1s0 unknown bit-rate information.
Current Bit Rate=144,4 Mb/s
But NetworkManager show that speed is changing.
Screenshot in front of router:


