I have tried both on a laptop and on my regular computer. Both have the same behavior.
I don't see any latency when using the Phidget control panel.
I will try to access my phidget with the C library today. Maybe it is just a problem with the python library.

I tried using your code but the latency is still there. When I run you code without changing anything It shows me the temerature only once and then when I tap enter itshows a second one and stops. Temperature: 25.5247 Press Enter to Stop Temperature: 25.5091 When I comment out the temperatureSensor0...

I am trying to use the PhidgetTemperatureSensor 4-Input, which directly talks to my computer with USB. I manage to read the temperatures but have a strong latency (5-6s) from the time the temperature changes to the time the computer reads this temperature change. This means that if I put my fingers ...