VG271 Pbmiipx 10-bit Settings?

Triparadox
Triparadox Member Posts: 55 Devotee WiFi Icon
I heard that I can use 10 bit color on this monitor if the refresh rate is downed to 120Hz. I tried lowering it, but the color depth is still 8 bit. I'm using DP1.2 instead of HDMI. Is that an issue or there's just a hidden settings somewhere that I didn't find?