Can A Better HDMI 2.1 Cable Fix Your TV Issues with 4K@120Hz VRR HDR?

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Published May 29, 2025

We demonstrate how an HDMI 2.1 cable rated at 48Gbps fixed the flickering and screen blackout issues we encountered when trying to output 4K@120fps from an RTX 3090 graphics card to a Samsung Q90T 2020 QLED television.

We also explain the step-by-step procedure we used to achieve 4K@120Hz HDR VRR on the Samsung Q90T (latest firmware update of 1402 installed), involving engaging [Input Signal Plus] and [Game Mode].

The TrueHQ HDMI 2.1 cable can be purchased here*: https://geni.us/hdmi21

*Disclaimer: This is an Amazon affiliate link, from which we may earn a small commission with each qualifying purchase to help us purchase more gear to review. Our analysis and opinion are never influenced by potential commissions.

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