Thats what it is. Without a doubt. My cheap helmet did the same thing. Seems the sellstrom i bought works much better. And the aggrivation from the cheap headgear doesent help either.
My "good" helmet is a Jackson Next Gen. Almost 20 years old, but has LCD screen with many adjustments for darkness, time delay on, brazing, etc. I am going to bring it home from work and see if it changes things.
