Some Microsoft Surface devices are throttling down to 400MHz August 15, 2019 https://www.engadget.com/2019/08/15/microsoft-surface-throttling-400mhz/
Microsoft is testing fix for Surface devices CPU throttling issue September 29, 2019 https://www.windowslatest.com/2019/...fix-for-surface-devices-cpu-throttling-issue/
I think that maybe they meant 'not encounter heating issues' 'In August, Microsoft confirmed that some Surface Pro 6 and Surface Book 2 users have been affected by performance issue and the company said a fix will be released soon. On September 28, a Micorosft engineer has now confirmed that a fix is being tested and it will be shipped to everyone through Windows Update when it passes Microsoft’s quality standards. “Thank you for reporting the issue. We are testing a fix that will release as soon as it passes our quality testing. When the fix is released it will be made available through Windows Update,” Eddy Atinda, a Microsoft employee stated. Microsoft hasn’t revealed what caused CPU throttling, but some users believe that Intel CPU flag BD PROCHOT throttle down CPU processing power in order to encounter heating issues. In theory, the Intel flag is helpful and present in various flagship devices, but it appears that firmware update is causing the BD PROCHOT to activate even when CPU temperatures are low.'