Ok, so assuming your kitchen isnt at 5 degrees C and 80 percent humidity ( 😘 ) i see what you mean.
Have you checked that water temp with milk thermometer as it runs in the cup.
Dont forget especially if tou get a “cheap” thermometer to “calibrate ” it at 99.99 degrees 😎
Ade Smith. ACS Evo Leva v2. Kafatek Flat max 2, ssw 2024. Mazzer Philos, Craig Lyn HG-1 prime., WW key mk1.