Hello,
My 2 week old surface book 3 ( i7-1065G7) is now throttling at a very low speed of .19GHz.
I have a standard mouse plugged in, and a Microsoft USB-C Travel hub connected. To the travel hub, i have a 2nd monitor connected via VGA cable. This system worked well until i plugged in an Ethernet cable to the hub from my router.
I have unplugged the travel hub, and have restarted the computer 2 times now with no luck.
This happened to me today also, 0.19GHz, applied latest firmware, restored windows to day earlier and finally reset windows (5 hours). No joy, still runs at 0.19GHz like a dog.