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https://twitter.com/club3d/status/1308039927767105538?lang=en
FROM Twitter :
The Parade PS196 is supposed to support VRR but I don’t know if any adapters exist yet that use that chip.
https://www.paradetech.com/products/ps196/
Here’s something but I don’t know if you can get it or if it supports VRR.
https://www.hoyunwholesale.com/products/cruxtec-usb-c-to-hdmi-2-1-cable-support-hdr-8k-60hz-4k-120hz
Here’s another PS196 based adapter:
https://www.centrecom.com.au/cruxtec-2m-displayport-14-to-hdmi-21-cable-8k60hz-4k120hz