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CAC-1085 2080Ti LGC9 no 120hz option

Updated on 28-02-2021 in DisplayPort 1.4 to 4K120Hz HDMI Adapter
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2 on 16-02-2021

I have the CAC-1085 adapter with the following setup and I cannot get the 120hz option to show up no matter what settings. Any help would be appreciated. 

Adapter: CAC-1085 USB Powered by own power supply as recommended

HDMI Cable: CAC-1372 2m

Graphics Card: 2080Ti

TV/monitor: LG C9 latest firmware

Video Drivers: 456.55

 

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Baak 0 on 17-02-2021

Hi Solofx7,

If you downgrade back to Nvidia’s 456.38 drives it should work again.

 
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Diablix 0 on 28-02-2021

Hi Solofx7,

Even 456.71 driver works. At least it works with my 48CX. The issue is registered as open issue since 461.40: Displayport-to-HDMI 2.1 protocol converter clock limited to 600MHz pixel clock [3202060].

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