Blur Busters Forums

With my Club3D CAC-1085 displayport 1.4 to hdmi 2.1 adapter, I managed to get 4K 120Hz HDR working with those parameters :
Horizontal Front Porch : 48, Sync width : 32, Total pixel : 3970
Vertical Front Porch : 21, Sync width : 23, Total pixel : 2255

I tried to increase the vertical porch to 50 ...

>> 1. Upgrade to latest C9 firmware. Early C9 firmware do not support VRR.
Already done : 05.30.11

>> 2. Please turn on "Instant Gaming Response" to get the hidden VRR menu option to appear.
Already done : "Instant Gaming Response" is ON.
"Ultra Deep Colour" is ON too, as some forums tell to ...

But yet the C9 is compatible with VRR.

https://www.rtings.com/tv/reviews/lg/c9-oled
1080p VRR Maximum 120 Hz
1080p VRR Minimum 40 Hz

It's even compatible with gsync on GeForce RTX or GeForce GTX 16-Series GPU. Unfortunately my graphics card is older so I can't test this.
https://www.nvidia.com/en ...

I made a lot of tests using different parameters, including Quick Frame Transport (Interesting technics by the way)
But I did not managed to find working parameters for 96Hz.
I mean windows looks OK at 96Hz, but TestUFO always indicates dropped frames (TestUFO is OK when frequency is 100Hz or 120Hz ...

Thanks for that fast answer, and congratulations for your website and this forum !

I thought to that VRR option too. But unfortunately my graphics card (Titan X pascal) only has a HDMI 2.0b port. I guess that's the reason why I don't see any VRR option on the TV. Even with a Displayport->hdmi 2.1 ...

Hi,
I managed to make my nvidia 3DVision kit work with my LG C9 at 100Hz using CRU and NvTimingsEd.
I tried to watch my 3D bluRays on my C9, but although 3D is very good, I have got judder.
My videos are 23.976Hz. With 3DVision at 100Hz, each eye is at 50 frames/second.

So I created a 96Hz profile ...