Here is another picture. I don't see how it's "fuzzy" as Rtings.com has mentioned.
Going by the very tiny mouse pointer in relation to the lines that looks scaled up, so unfortunately that is not a 4:4:4 test. The lines need to be only 1 pixel wide for the test to be valid, or about the same as the edge of that mouse pointer.
Windows "helpfully" scales up things in many cases, you have to force it to not do it by using image viewers. The 1080p test image should only take 1/4th, the 720p 1/9th of the screen. (rtings uses the usual 720p image)
The rtings comments about "blurry" really worries me about whether or not to swap my JS on the warranty replacement. It makes no sense, 4:4:4 has no "blur" or colors by definition: either the signal passes to the panel to map 1:1 color for every single pixel or it doesn't. (aka 4:2:2 or 4:2:0 etc)
Vizio already struck out on me before by faking it with HDMI 2.0 "lite" 10Gbps from the first P series I returned, if they are doing some dumb hack to fake 4:4:4 @ 60 this time around that would suck.