I have a 2014 CVR 2.2 diesel EX. A few times recently while driving on motorways. I have experienced a momentary loss of speed. It only last a fraction of a second but enough for you to feel the car slow. Is not like lifting your foot off the accelerator where the vehicle slows gently. But as if the brakes had been applied. The cruise control remains engaged and the car does return to the set speed. It then drives as it should for a few miles before it happens again. When the cruise control is disengaged the car runs perfectly. Anyone experienced this before? If so, what was the fix?