I just bought the new fire tv stick 4k Max about a month ago. My older Roku was getting glitchy. All of a sudden in the last week or so, all the local channels (Fox, CBS, ABC, NBC) are fuzzy and look like standard definition. Weird thing is, all other channels are crystal clear. It's driving me insane because I can't figure out why. Looked in settings, googled it, etc. Got nothing. About to throw the firestick over the fence and dig the Roku back out of the drawer.