Hi Shastings,
I have a:
MacBook Pro Mid 2015 ( had it for 2 weeks )
2.8 GHz Intel Core i7
16 gig ram and 1TB internal
Basically the best laptop on the Mac market today and it runs VERY hot and VERY loud nearly all the time.
I have a 30" Cinema display plugged in through Thunderbolt and a 24" HDMI monitor
1 x 3TB thunderbolt drive and 1 x 3TB USB3 drive for backup
I am having the EXACT same issue you describe and more with the fans. It appears though I have done a lot more troubleshooting so far with both Apple and Adobe. My system is running less than 5% CPU right now, but my temp is 126F and fans running at 3000rpm all the time when idle.
Here is what I have come up with:
1. It appears that my 30" Cinema display causes the video card to heat up and thus makes my machine run at 126F when idle no matter what. The temp will drop to 117F idle when not plugged in, but either way, the fans will rarely go below 3000rpm according to SMC Fan Control.
2. The CPEhtmlengine issue of Adobe was causing the main issue. You can read about it below:
https://forums.adobe.com/thread/1961935?tstart=0
https://forums.adobe.com/thread/2097750?start=0&tstart=0
So, I got on with top Adobe tech, they remoted into my machine and put in the patch for this issue. They say they are working on a solution that will come out in the next version of CC. But, this solved the issue of this file taking up more than 100% CPU when Photoshop, Illustrator, InDesign, and Dreamweaver running. It does happen in Muse too, but the fix for this is to ALWAYS have the CC Libraries panel turned off and then it stops using so much CPU.
3. The Chrome issue is also a culprit, but I found if I turn off auto plugins and only allow them when needed, the CPU of Chrome drops a lot, but the Ram usage of Chrome is crazy. Over 1 gig just for a browser.... WFT Google?
4. The Kernal_Task also uses over 1gig of ram right when the system starts. WFT Apple? Why would you need 1gig Ram just to start and run the OS?
5. The system right when you start the machine jumps to 140F+ and the fans run 6200 rpm for 2-5 minutes with NOTHING running. When I launch Activities all I see is a task called "mds_stores" writing over 1gig of data to the HDD on start up. Research shows this is a spotlight scan, but why would it cause the system to overheat and the fans to go full speed every time I restart? Also, why is it showing 1gig data transfer on the Drives panel for this time frame right on start up? I need an answer on this...
6. Just so you know that I have FULLY trouble shot this, I swapped this machine with another brand new one in the store with Apple Genius people ( since they thought the issue was the internal SDD) and migrated over all my stuff in store. Smae issue occurs with this machine. I am a 20+ year MacHead and have built dozens of machines over the years. I have never seen one do this right out of the box, twice.
In conclusion, If I don't run the Cinema display, and just the HDMI, the machine is less hot (117F), but still runs hotter once ANY software is running on it. Performance is fantastic and I have put it through it's paces with numerous 1080p edits, over 2 gig billboard designs in Photoshop, large Muse projects etc., etc. since I have owned it and it handles all, but it sounds like a jet engine to do it. When I monitor the CPU, even when using Photoshop and Muse, I am less than 10% CPU nearly all the time (even right now just running Chrome) and the fans are over 3000+ rpm ... way more the moment I actually task something to open. I am VERY concerning this system will not last my normal 5-10 year lifespan of every mac I have ever owned with the system and fans this hot all the time. It NEVER cools down to the documented 95F and 2000rpm, ever since I owned it.
I have a 2011 Mac Tower (loaded to the nines) and a 2011 MacBook Pro (8 gig ram). All with the same latest OS (10.11.4) and same software from Adobe and others since I need to be able to do multiple jobs at once... The speed is far less than this new machine, but neither of them have this same fan issue when running the exact same software and OS.
This is just crazy Apple. This is a brand new machine and should handle everything I can throw at it and more. What is going to happen when I start editing 4K, the reason I bought this machine (just bought a Sony AR7sII and a drone, both with 4K) This Thunderbold drive can handle it, the processor can handle it, Premier can handle it, but will the machine just blow up from over heating since the fans can't run any faster than they do now when running the basics?????
One last thing to note: I have Apple engineers saying they are looking into this, according to the senior tech I have been talking to, and all they have told me is to reinstall, rebuild, reset the SMC and zap the PR.... all of which I have already done (and more with Adobe to insert the patches) plus swapping machines and I still have the same issue. THIS IS A PROBLEM APPLE! Please solve it. I have just 2 days to return the darn thing and I REALLY don't want to, but I don't like working with a jet engine when it should be the fine tuned MacBook Pro I expected for this crazy amount of money I paid.
PLEASE HELP!!!!