Jellyfin causes lg g4 tv to incorrectly change refresh rate

[LV948651]

Hi,

My setup is a htpc i3 12100 connected by 1.4 DP to  2.1 hdmi to a 1700x AVR connected by hdmi 2.1 to a lg g4 tv.

Whenever I use jellyfin it changes refresh rate to the video refresh rate. The AVR correctly identifies it as such, but the lg g4 changes to 120 Hz for some reason.
Moreover, black levels are completely out of wack when this change occurs, resutling in poor color reproduction. This behaviour does not occur in VLC. 

Anyone have this happen before?

[TheDreadPirate]

Which Jellyfin client are you using on the HTPC?

[LV948651]

Which Jellyfin client are you using on the HTPC?

The jellyfin media player (desktop client). I've found that when the client switches to the correct refresh rate, windows displays the correct hz. But the avr 1700x maybe loses connection shortly and doesn't recognise a hdr signal anymore, resulting in the washed out colours. I haven't figured out why this happens. As a result the tv defaults to 120hz and sdr.

[TheDreadPirate]

One of my older TVs sometimes does something similar when my Android TV device switches refresh rates. It flickers and whigs out and I have to back out of the video playback and re-initiate.

My other TV, also with the same kind of Android TV device, doesn't have issues with refresh rate switching.

So what you're describing checks out.