Xbox One S, Vizio M55-D0, 4K UHD HDR Problems! (Black Screen, Snowy Screen)

I am having a similar issue with my M55-D0 and my One S. With HDR on I get a black screen/snowy screen when I load up a 4K Blu-ray disc. Normal 4K works fine'ish. I've tried other HDMI cables.

I can verify this issue...Netflix UHD does not work on Xbox One S. I have a Vizio M55-D0 with the latest firmware enabling HD10 support. My TV is now recognized by the One S video settings as 4K HDR capable. I am able to enable HDR support and it works beautifully
with the Blu-Ray app (Mad Max 4K Blu Ray playing 4K, 24fps, HDR as verified by the Vizio settings app). However when I start Netflix, the screen flashes, colors mute, and video fails to switch to HDR or 24fps. Netflix app is clearly broken right now for HDR.
If I switch HDR off on the One S, Netflix app is fine, plays 4K correctly, colors are fine obviously no HDR.

Ok, So I have a M65 D0, so there might be some important differences but here's what I did.

My monitor has 5 HDMI inputs. 3 normal HDMI labeled "best" one High speed and one ARC.

The High speed and ARC are HDMI 1 and 5 and known not to be compatible with xbox 4k. Both have "color subsampling option"

Hdmi 1 would give me black screens and color static and Hdmi 5 (high speed) is known not to be compatible and would give me 2 second black screens every few minutes.

Switched to one of the "regular". "best" HDMI inputs and has been 100% super ok for a week of hard use.

My XBOX is set full on 4k, HDR, 24 MHz whoosits ,. allow 4k etc. Can see the 4k Netflix and everything. Only exclamation point is "this device does not support 50mhz"

I guess I'm missing whatever color subsampling is, but I have HDR and everything else with no problems.

I bought the 65 because the 55 doesn't have HDR or something. I forget, it was the only M model without a box ticked in the model comparison chart. So I skipped it.

YMMV, but I'm good to go.

Official from Vizio support, they do not support HDR gaming on the xbox one S

I have an Xbox One S hooked up to the HDMI 1 on my M70-D3. And while it's great, there are black outs periodically.

This only happens with the Xbox and only when hooked up to the M70-D3. I tried other sources on the TV, HD antenna, Apple TV (4th Gen), and using Cast, there was no issue with those sources.

I hooked my Xbox to a M70-C3 (2015) and there was no issue on that TV.

So, there seems to be an issue between the Xbox One S and specifically the M series Dx (2016 HDR Vizio TVs), I have the latest firmware on both devices.

Update: The latest firmware update was supposed to fix the issue of the black screen. The issue I am having now is while playing HDR content my screen will become all snowy. Vizio has already been out to replace my TV's HDMI board and I am still having the
same issue. They are supposed to be back out today to see what the problem is. The problem in my opinion is The TV's playing 4K HDR content through the HDMI port.