Hello!
I'm not sure I should write about this here or at Microsoft Answers but I think the chance of it being inspected is bigger here.
It is not a big issue, but ever since installing windows 10 Pro on my D54250WYKH I've seen an increase in idle temp of ≈5°C. It used to idle at 35°C and now it is 40°C. I have disabled all background activities possible, disabled windows update etc. I know the OS is new and drivers might not be optimized yet, but I just wanted to bring it up.
Another thing that might be relevant is that hard drive spin down does not work as it did with windows 7, but I've seen this reported from people with various hardware. I have a mechanical disk as a secondary drive and I've set spin down to 1 minute which equals ≈10 minutes (I have measured). But I think this definitely is a Windows issue.
Have a nice day!