According to numerous reports that we’ve seen, Microsoft
Surface is suffering from a CPU throttling issue and the bug
appears to be hitting various models, including the Surface Pro
It’s worth noting that this issue is not associated with
Microsoft’s firmware or software update and users have reported
the odd CPU throttling behaviour in past too.
This is based on the popular posts from Reddit (1,
answers forum, and Feedback Hub. Several posts on all these
community forums indicate that CPU suddenly slows itself down
and drops to 0.4Ghz– below the base level for the chip.
“I have the same issue. And it happens somewhat randomly. Seems
like there is an issue with the power management firmware,” a
user wrote on Microsoft answer’s forum.
“My Surface Book 2 is thermal throttling down to 0.4GHz with a
mild-moderate workload. It is reasonably warm in my office (its
the summer; well within acceptable office working limits).
Laptop is *not* in direct sunlight. After a days usage
(browser, MS Office, MS Visual Studio Code, sometimes Android
Studio), by the afternoon the laptop starts to stutter and the
mouse sometimes lags behind by several seconds,” another user
documented the problem on Feedback Hub.
It’s entirely possible that CPU slowdown is caused by
Microsoft’s thermal throttling approaches. Other high-end
laptops are also subject to thermal throttling and Apple MacBook Pro
models were also experiencing performance issues until
Apple released software to fix excessive throttling.
It could be a bug impacting the thermal management system which
slowdowns the clock speeds under heavy thermal loads. The
throttling issue was first reported in 2018 on Surface Book and
complaints have increased significantly in 2019.