I have seen the image already, I am closely following the webastro forum. Lots of interesting stuff happening there
My changes to the viewer software are really only useful for this test. It was a quick fix and there is no error checking at all for the parameters. But it can be useful to see if you get temperature glitches as well. If you could just run the "auto temp" option and leave it for a while and then copy/paste the temperature output, I could see if there are any glitches there as well.
The viewer is not using the ASCOM driver so it is different.
But I have a feeling that the temperature glitches are caused by the noise from TEC. Did you have the temperature glitches before this driver/firmware?