Hi Luka
I'm all set up waiting for the sun to go away, so have just given this another spin with my original "temperhum 1.3" device and your latest V3 ASCOM beta, running from within Sequence Generator.
SGP crashed on first attempt, but 2nd time I unchecked the "2nd Sensor" tickbox, and seem to have success
Have dangled a 2nd thermometer nearby and the readings look believable. 40 degrees temp and 8% humidity - don't think I have to worry about fog tonight. Terrible drought once you drive inland a bit in SE Qld.