Post by codlord on Mar 27, 2019 17:18:11 GMT
There seem to be many threads which speak about different HDMI cables so here is the result of my experiences. In summary, different cables DO make a difference to what works and what does not.
My testing was all done using a PS4 Pro as the source and a Samsung UE55KS8000 TV as the display.
TEST 1 with a variety of "any old HDMI cables" I had including the one supplied with the DS4K:
- Without DS4K my "any old HDMI cables" work fine with PS4 outputting whatever resolution or format I choose including the best 4K RGB signal.
- With DS4K my "any old HDMI cables" would only work with PS4 outputting up to 4K YUV420. If set to RGB I got no signal.
TEST 2 with Premium Certified (HDMI 2.0 HDCP 2.2) 18 Gbps cables:
- No change. Still would only work with PS4 outputting up to 4K YUV420.
However, I was then sent a replacement DS4K unit due to another unrelated issue, so I repeated the test with the new unit:
TEST 3 with Premium Certified (HDMI 2.0 HDCP 2.2) 18 Gbps cables:
- With the PS4 outputing 4K RGB I got an intermittent display on the TV. So still not working properly.
TEST 4 with Belkin AV10175bt2M "Ultra High Speed" HDMI cables (sort of HDMI 2.1 spec cable but they don't say that) 48Gbps cables:
- With the PS4 outputing 4K RGB I got a display.
GREAT! (I thought) finally solved it. BUT when I played a netflix film I very soon got regular display and audio drop-outs and the flex lights flickering
So for me, even with seemingly the best (quite expensive!) HDMI cables it still won't work with the best output mode my source can offer, although it proves there are differences between the cables.
SOME MORE DETAIL:
Although I really like the DreamScreen 4K I have come to the conclusion (my own experiences and all the issues talked about here) that it really isn't fit for purpose for those who are at the bleeding edge of using 4K (I am talking about if you use 4K RGB output, 4K HDR, Dolby Vision etc.) The HDMI hub in the DS4K for whatever reason just doesn't seem to handle top-end signals or introduces complexities that source and/or target devices cannot support. I am sure the team do their best, I guess it's a nightmare with hundreds of different formats and specs and whatever...
I think anyone with these sorts of problems or thinking about buying a DS4K needs to also budget to either buy some super expensive HDMI cables or buy an HDMI matrix as per user antinoitikos suggestion here (although either of these options still might not solve all issues!):
This all started for me from user bigdogg thread here so thanks for that info: