As far as i know we need the support of DSC for native 4k.
The vive link box does have a mini dp-in and HDMI-out, maybe using an DSC compatible converter chip inside?
Please Pimax, could you try?
I do not have an DP2mini-dp-cable lying around and i think you do need a special piplay version to support that, right?
I looked at fixit for the chip in the link box, but they did not open it.
Please, let this be true!
Thank you @Pimax-Support for trying!!!