I have a Commander PRo and I had the same problem for the last 6 weeks and have been pulling my hair out. The ramping was always caused by a very high CPU package temp increase (36 idle but going up to 75). ALL of my fans would then ramp up to maximum, irrespective of custom profiles, or the fact that 3 of the 4 custom profiles were not even linked to the CPU package but the GPU VRM (which did not increase in temp).
Then last week by chance I noticed this ramping always occurred when Opera or Chrome were open. I then discovered that (for my situation) the culprit was drive-by cryptomining scripts hidden on webpages. I installed NoCoin extension in Chrome and Opera and since then have not had a problem.
Hope this helps