speed of processor 1 in group 0 is being limited by system firmware !?

I am seeing several messages in the event log shortly after I boot (the adapter message appears earlier than the processor messages):

• A command sent to the adapter has timed out. The adapter did not respond.
• The speed of processor 0 in group 0 is being limited by system firmware.
  The processor has been in this reduced performance state for 71 seconds since the last report.
• The speed of processor 1 in group 0 is being limited by system firmware.
  The processor has been in this reduced performance state for 71 seconds since the last report.
• The speed of processor 2 in group 0 is being limited by system firmware.
  The processor has been in this reduced performance state for 71 seconds since the last report.
• The speed of processor 3 in group 0 is being limited by system firmware.
  The processor has been in this reduced performance state for 71 seconds since the last report.

What could be causing this? My firmware is up-to-date.

Berton said:

Which model number of that Inspiron?.

Inspiron 15 7000 Series 7559
I have all the latest firmware and drivers already downloaded and installed.
I realize this could possibly be caused by a recent update that needs to be backed out.

Berton said:

Everything I've read indicates Windows 10 is the last major version

Yes yes, 11N-UX as in Linux.