I wonder how many products have components that downgrade under specific situations and they never explicitly tell the customer - and most customers don’t ask because it’s “complicated tech” they don’t want to know about it.
The Lenovo Thinkpad t480s comes to my mind: with factory settings, the CPU was unable to reach its advertised boost frequency nor maintain its max non-boost frequency for more than a few minutes. After 5 to 10 minutes, the machine was usually running at 300/400mhz under its advertised clock speed.
Undervolting helped a lot but could not fix the issue completely, under clocking was the only solution to maintain a consistent clock speed.
# echo disengaged > /proc/acpi/ibm/fan
So if you are an average user of a Lenovo laptop without technical skills, you probably have a machine that does not meet the advertised performance, and no way to fix it.
It was usually less annoying for me to just disable turbo, and only turn it on if I really needed the boost.
End result is your old clothes dryer starts taking longer and longer to dry clothes.
Laptops and phones also notoriously slow down to manage heat, and that is also never told to the user.
A common task that repair shops do to "fix a slow PC" is clean dust from the fans and heatsinks to reduce throttling. Users don't know or understand that this is happening, they just know their system is slow.