This was the report I posted yesterday:
"I'm using it in clamshell mode connected to an LG4k (at 3360 x 1890) via usbc->dp. I've been downloading / installing software instruments from Logic / Native Access for over the past 12 hours, and temps (according to iStat) have been in 60s / 70s, with small spikes upwards to 70s/80s.
Right now I'm watching something on YouTube TV (through their app), browsing in safari, downloading and installing software through Native Access, updating linux VMs (Parallels), and installing / lightly using Netbeans 8.2."
So that's: watching videos in Chrome, having Safari open with numerous tabs, downloading & installing 100's of gigs of instruments through Native Instruments Access, while downloading & installing the "additional content" from Logic (one 50+GB & one 60somethingGB?), while running a Fedora VM in Parallels and updating it's OS (Fedora 30->current version), while playing around with Netbeans (compiling old stuff from school).
Doing all that at once isn't normal use. Usually I'll just have Logic open (using software instruments) by itself or with Spotify, or an IDE/editor, or a VM, never all at once, switching between them to test out a laptop.
My other post (when the temp was 64C and had the 4600rpm spike), was playing a large project (well, somewhere between 10-15 NI/orchestral instruments , none of them frozen, trying to eat up RAM (I only have the 16GB version)) - then switching over to Safari and Spotify while the project is playing, I even put Netflix on at one point. The fans came on for that, but...yeah, you would expect them to. Again: that's not normal use.
When I actually did things proper and froze/bounced tracks, then imported a 1.5GB video with the bounced track + 1 or 2 more software instruments (unfrozen), fans were in the 3000rpm range as I left it on a loop. That's more expected use.