DellP2314T and resolution 1280x768 or 1280x800. Please help.

Hi Guys.
Thank you a lot for this forum.
Please, could you advice me?
I am using HP eliteBook8570W with AMD M4000 and W10.
I bouth USB3 Dell docking station DL3100 and monitor DellP2314T.
I want to use those additional monitors with resolution 1280x768 or 1280x800 (due to program not scalable), but driver for DellP2314T monitor does not support this resolution.

Monitor on notebook and graphic cart support resolution 1280x768.
What I should do? Please, help me.
Thank you in advance for your support.

  moninfo Dell 2314T realtime 0x1100.txt (Size: 7.11 KB / Downloads: 0)

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  DellP2314T registry 04.PNG (Size: 74.57 KB / Downloads: 0)