Sorry if this is a repeat question, but my Roku Stick (3600x) seems to get pixelated when there is a lot of "noise" or stuff going on the channel. For example on the WWE network during entrances there are a lot of lights and fireworks and it gets very blurry and pixelated. I'm trying to determine if the root cause is that I have a lower end model or if its just natural due to all the noise? If I upgraded to a more powerful box would that go away because it's pretty annoying to be honest. Also - I don't have a 4k TV but if I got a 4K box would I still see any difference in picture quality since my TV isn't 4K?