I'm also getting red artifacts only at temperatures 3250K and below on my Lenovo Yoga c940 (haven't tested external displays). When below 3250K, sometimes the artifacts appear/disappear.
When the artifacts are gone, sometimes when switching between applications the artifacts can reappear for a moment and then quickly disappear again. This doesn't happen when dragging a foreground window out of the way abruptly to reveal an image behind it. It only happens when I switch applications (e.g. Alt+Tab). Thought this might be a useful clue for the developers.
Intel Corporation 184.108.40.20647: Intel(R) Iris(R) Plus Graphics (20190614)
Lenovo Display 3840x2160, 309 x 174mm, built 2018
sRGB gamut: 100%, AdobeRGB gamut: 82%
Monitor 1 on Intel(R) Iris(R) Plus Graphics: VCGT=0 gamma=1
Windows Build: 18363.836
The 1.5 version of the i1Studio software is not compatible right now, so we recommend getting one of the older versions (1.1 or 1.2).
Also, yes, the i1Studio is the same hardware line as the older Colormunki.
I'm someone that downloaded f.lux, not only because I've been having a TERRIBLE time sleeping at all hours of the day recently, but also because I am the kind of person who is on my computer pretty much all day as long as I'm awake.
I also get really bad headaches when working with my computer for long hours and it was proposed to me that it might be the blue light from my computer giving me such terrible headaches. What do you guys think? I've only been using it for a day or so, but I also haven't had headaches yet since using it, so... :)