2014 Toyota Camry will suddenly downshift into 3rd gear at 75mph.

What is your question?

And I have a 2009 Toyota Venza that also will downshift. Cars cruise set at 75mph. All of a sudden the car will shift into 3rd gear. Can be on a hill or on flat highway. After a few seconds it shifts back into 6th gear. Happens going into a strong head wind at times. No lights on the dash. Speedometer stays at 75.

What makes this problem better or worse?

It varies

How long has your 2014 Toyota Camry had this problem?

6 months