[Z9X] HDR or Dolby Vision delayed playback

[DMD]

Good morning I just got the long-awaited player, but I verified that when I play files in HDR or Dobly visionl the screen is black and the counter on the display advances, after about 40 50 seconds the video appears.
Is it a defect of the player or does it need some special setting, possibly I will make the return of the product.
Thanks

[futeko.com]

It sounds more like a problem with your display device or the HDMI chain leading to it than the Zidoo. How is the Zidoo connected to the display device? Do you get the same problem when connecting the Zidoo direct to the TV using the supplied HDMI cable? What display device is it (brand/model)?

[DMD]

Thank you for your reply.
The video chain that consists of AVR Key and LG 65B6V display is the same one where the HiMedia Q10 pro was connected, which works perfectly.
I tried connecting the Zidoo directly to the display and encountered the same problem.
I upgraded to the latest firmware (6.4.28) even with that I could not solve it.
I unplugged from the network overnight and this morning it seems to work fine videos both HDR and dolby vision after the player circle start immediately, like HiMedia.
I keep it under observation to see if the problem happens, I can't give an explanation.
I also scritop to Zidoo service, but they gave me an answer that does not represent my situation.

"It is correct.
The video starts to play and quits to play. When the player and the display device switch frame rate and HDR, they will shake hands due to the HDMI protocol. This process is a black screen.
Turning off the frame rate switch and playing SDR will not be black, but HDR will still be black, which is normal. In addition, the handshake of the display device also shows blue screen, green screen, flower screen and product LOGO."