Samsung MU7000 game mode on PC

[Zodiaec]

I have been trying to activate HDR alongside game mode for my pc to get chrome subsampling 4:4:4, however turning on HDR disables game mode. With game mode switched on and HDR switched off the tv limits itself to YCbCr420 even when the input is set to PC, I have the latest firmware installed in case that was the issue. 

Is there anyway to enable both HDR and Game mode for PC to get the correct subsampling and low input lag?

Thanks in advance

[Zodiaec · Accepted solution]

Nevermind I found the solution, if you change it to Game console instead of PC it allows you to customise the colours to full RGB/YCbCr444. It also allows you to have Game mode and HDR enabled at the same time. I suspect it may be an issue with the PC input option.