Zigbee2mqtt: getting rid of your proprietary Zigbee bridges (Xiaomi, Hue, TRADFRI)

Can someone answer a question about zigbee2mqtt and xiaomi zigbee power plugs.

I currently have the power plugs in H.A. via the gateway. The plugs report watts used. If i plug in a heater and switch it between high and low, the power (wattage) used updates in the mi home app immediately, however it takes over a minute to update in H.A.

Question:

  1. Does zigbee2mqtt report the power usage of these plugins.
  2. How long does the plug take to update in h.a. when the power usage (watts) changes?

I need to create an automation based on power usage of a 220v device and the Xiaomi update frequency currently is too slow.