There's a case temperature sensor top right.
Higher case temps cause throttling.
Apparently simply holding your hand in the right spot can reduce case temp and cpu gets more power allowance.
Yes, the Surface Pro 4 has thermal throttling... but not what you think • /r/Surface
That's the time it will look at to measure average power. So at 28 it will review the last 28 seconds and if average is over power limit it will throttle.
It's how responsive to change you want it.
EDIT: quote fail, but you get the idea
I asked this very question on the Microsoft Store and was told by Microsoft Team that:
"No, Surface Pro 2 is not compatible with the Surface Pro 4 Type Cover."
Buy Microsoft Surface Pro 4 Type Cover - Microsoft Store
EDIT: has anyone tried it?
Fairly sure it was the latest firmware.
I didn't install it (no issues I felt needed fixing) and still have the Intel options
Unsure on fix. Rolling back driver may help, but I haven't tried so can't say it's safe. Installing latest direct from Intel may help, but again I have not tried that
The Targus pads look like they would help:
Cooling | Targus | Targus
Unfortunately they're designed to have device sit on them, rather than attach. Velcro could be an option; depends what sort of artist you are!
Here's some "lap-desk" type options for you to consider (really depends how you...
I'd go to the Windows Store, swipe from the right for settings and check for updates.
Windows Store / Metro / Modern UI applications don't always auto update, at least on my machine
Not all that likely to help, but worth checking