The energy_v2 websocket mode has the Amp’s and Volts updated every 10s not 30s.
Which makes me wonder your wifi has troubles. Check the websocket tab in Homewizard app settings for issues.
EDIT: You are right, eventhough code updates every 10s I see the 30s in my P1 as well.
Let me investigate (assuming the websocket update has some different message update interval)
