Program lags when connected to blynk but there is no lag or delay in buttons, relay, switches when it is not connected to blynk

[IBK]

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Blynk and Nextion

I think I’ve found something worth looking at: It’s the way the two DS18B20 are set (resolution) and how they are interrogated (blocking). According to the datasheet (https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf table on page 3) it takes 750ms (!) (at 12 bit resolution) to get the temperature. take_temp_readings() is called once per second (not sure if that is practically necessary). This is close to the time it takes to read the temperature from the sensors. What I would change i…