Slowness and CPU Issues with Latitude 7389 2 in 1

We have been having slowness with our latitude 7389s (more than 10 of them) The fan starts spinning really fast, underneath the laptop gets really hot and the CPU usage goes up to 80-90% (each time its a different process) and the computer gets really sluggish and unusable

We have the latest bios/drivers on those laptops. and Hardware diagnostics are not finding any issues.

Anyone else having the similar issue?