10 bit output HP ZBook Power 16 inch G11 RTX ADA 3000

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Hi

I have a HP ZBook Power 16 inch G11 with RTX ADA 3000 connected through a HP G6 TB4 dock to a Barco 6530 medical display running 3280x2048 resolution. The display supports 10bit color and if I connect it to a MacBook Air over the same TB4 connection, I het 10 bit output. I also get 10 bit over DP from a HPz4 workstation, but I can only get 8 bit from the Zbook G11. I've also tried direct TB-DP cables. In display properties, it's connected to the intel iGPU and there is no option in windows, nvidia control panel or bios to force it to use the RTX.

I've also spent >90 mins on a single call with HP support.

My question is can I force it to use RTX ADA for 10 bit or can I get 10 bit from the iGPU?

Thanks for any help!