I did test the first 2 HDMI but not the 3rd and 4th one, and it works (only on the 4th one). The other ones cannot display 3840x2160@60 today but the lower modes are still OK. I can’t understand why.
I’ve tested all the HDMI modes on the TV, and also the HDMI UHD (HDR) on/off, but it only work on the 4th HDMI (whatever the settings). It is marked “ARC” but I don’t think it’s related.
Sorry I did not test ALL HDMI port. I thought the HDMI PC/DVI would have be the right one, or the one next to it.
It works wonderfully, a shame my graphic card allow only 35fps on Witcher But for the videos it’s amazing.
Still, I think it is weird that the first three HDMI can’t work.
I’ve tested several time, only the 4th i’ts working. I’ve done no special configuration though.
Anyway, thank you. I hope it is going to keep working that way.