Colour becoming washed out on B8 OLED after enabling 120hz

kissenger · 31 Jan 2023 at 22:10

I’m trying to play Xbox at 120@1080 on my B8 LG OLED but when I switch over from 60@4k HDR seems to turn off despite being enabled, and the colours become really washed out.

Does anyone know if this is a limitation of the TV or a configuration issue?

theone8181 · 1 Feb 2023 at 10:47

kissenger said:
I’m trying to play Xbox at 120@1080 on my B8 LG OLED but when I switch over from 60@4k HDR seems to turn off despite being enabled, and the colours become really washed out.

Does anyone know if this is a limitation of the TV or a configuration issue?

Does the tv show hdr coming on?

kissenger · 1 Feb 2023 at 18:12

theone8181 said:
Does the tv show hdr coming on?

It does at 60hz. Not at 120.

theone8181 · 1 Feb 2023 at 20:07

Wierd, the bandwidth of 4k at 60 is loads more than 1080 at 120. Does your screen support 120hz? Sometimes the B series get a bit shortchanged. I've only got a c9 and that works fine (but isn't really much help to your situation). Do you have the bit rate right? Sorry going off memory and I only have a lowly series s.

kissenger · 1 Feb 2023 at 22:40

Yep definitely supports 120. I’ve tried different bitrate settings. 8, 10, 12.

rare · 1 Feb 2023 at 22:46

Is deep colour enabled?

kissenger · 1 Feb 2023 at 23:42

rare said:
Is deep colour enabled?

Yes

kissenger · 2 Feb 2023 at 00:21

Think I figured it out: I had enabled Dolby Vision at the same time as changing to 120hz.

Edit: no, still being weird. After disabling Dolby I got HDR, but something didn't feel right with the 120hz, and the 120hz option was missing in my game's settings (I'm trying to play Warzone 2). Then I restarted and got 120hz setting again but again (and it feels smoother), but no HDR, and Dolby still turned off :confused:

theone8181 · 2 Feb 2023 at 06:04

Long short but have you tried turning both off at the mains? I know sometimes hdmi can have handshaking issues.

kissenger · 2 Feb 2023 at 10:17

theone8181 said:
Long short but have you tried turning both off at the mains? I know sometimes hdmi can have handshaking issues.

Just tried that. Hasn’t seemed to make a difference.

Also when I’m running at 4K I can see a HDR option in the game’s setting menu, but not when I’m running 120hz.

theone8181 · 2 Feb 2023 at 10:45

kissenger said:
Just tried that. Hasn’t seemed to make a difference.

Also when I’m running at 4K I can see a HDR option in the game’s setting menu, but not when I’m running 120hz.

Very odd. Not sure what else to suggest.

rare · 2 Feb 2023 at 10:46

Sounds like a bandwidth problem trying to run everything at once what cable are you using?

kissenger · 2 Feb 2023 at 12:17

rare said:
Sounds like a bandwidth problem trying to run everything at once what cable are you using?

I'm using the cable that came with the Series S, which I believe is HDMI 2.0a.

rare · 2 Feb 2023 at 12:32

I would try another cable, a certified 4k cable. I had a load of problems with my PS4 Pro years ago because the cable it came with wasn’t up to the job. It’s worth a go.

kissenger · 2 Feb 2023 at 18:28

Thanks I'll get a new cable. Can anyone recommend one, preferably from OCUK?

theone8181 · 2 Feb 2023 at 20:35

But if its fine at 4k60, I'd have thought the cable would be fine at 1080/120, or is that not always the case?

kissenger · 3 Feb 2023 at 22:30

FWIW I think it might be an Xbox limitation, at least according to this thread. For some reason Xbox can’t do HDR below 4K whereas PS5 can.

kissenger · 4 Feb 2023 at 13:44

rare said:
I would try another cable, a certified 4k cable. I had a load of problems with my PS4 Pro years ago because the cable it came with wasn’t up to the job. It’s worth a go.

New cable didn’t work unfortunately. I can only put it down to the Series S.

rare · 4 Feb 2023 at 13:48

kissenger said:
New cable didn’t work unfortunately. I can only put it down to the Series S.

Very strange - doesn’t make much sense at all really does it.

kissenger · 4 Feb 2023 at 15:46

rare said:
Very strange - doesn’t make much sense at all really does it.

No. Very strange because PS5 doesn’t have that limitation. Seems like a conscious choice by MS.