So I bought this TV because the reviews were really good, everyone saying how great the picture was for the price, etc. Well one of the reviewers said the picture looked "blurry" to them in the sense that their eyes were strained and they kept blinking in an attempt to get their eyes to focus. That's exactly how I feel watching this TV, the picture looks clear and everything but my eyes don't really know were to focus and it gives me a headache. Is this a common thing with 4K TV's and my eyes just need to adjust?