PS4Pro - Grabbed image quality very bad

Hey guys,

just installed everything I need for Hyperion, now I tested the grabber. The grabbed image, when I'm using my FireTV-Stick is looking good, see here:

https://abload.de/img/firetvvvd0b.png

When I'm switching over to my PS4Pro, the grabbed images looks like this:

Ingame: https://abload.de/img/ps48li4b.png
Menu: https://abload.de/img/ps4_menuvycqt.png

Currently my setup is the following:
Input-Source -> HDMI-Switch -> Splitter -> TV and Grabber

I must say that the FireTV-Stick is running 1080p and the PS4Pro is running on 4k 60Hz. The nice thing is, that it is working without a HDFury Linker currently, the TV is showing the 4k output and the grabber is still grabbing. But not grabbing nicely, like you see it.

I switched PAL/NTSC, difference HDMI ports, ...

Could a HDFury Linker solve the problem, because it is some kind of HDCP encryption? Thanks for any help guys

When I disable HDR it all works fine, so currently my setup doesn't need any linker to run PS4 in 4k and grabbing a picture, awesome. I think the magic part here is the HDMI switch that is not telling the PS4 that there is one 1080p product in the line. When testing before without the switch the PS4 was set to 1080p too. Just HDR is not working at the moment. I guess the HDFury Linker could solve this problem, but as I don't really use HDR, I think I'm close to be finished with my setup.