There are many smart plugs which provides live data. The INNR Smart Plug is one of the exceptions. Other exceptions:
Blitzwolf BW-SHP13: 10 second interval
NEO Coolcam Power Plug V2: 30 seconds interval
(Source)
However, the P1 Energy Meter is not a smart plug and is designed for a completely different purpose. Theoretically, it could therefore be that the Energy Socket from HomeWizard does also not transmit live data, but I don’t know.