Don't know why I'm now just noticing this (had to look at previous tuts), but your screen seems to be out of focus.
In the video at the bottom, click the cog/gear/sprocket icon and click quality to change the quality setting. If you don't see the cog move your mouse around over the video until the player controls show up at the bottom.
Thank you, all. Yep it was at its lowest setting. Bumped up to 4K and my Coke-bottle glasses are seeing clearly again. Thought maybe glaucoma was setting in.