Windows 10 1709: Set custom scaling for each monitor

Question

I would like to achieve the following scaling scenario:

Intern Monitor - 175%

When connected to:
Extern Monitor 1 - 100%
Extern Monitor 2 - 110%

By using the settings app, you only can set Extern Monitor 2 to 100% or 150%. If I chose custom scaling, this value will also be used for Intern Monitor (and, probably, Extern Monitor 1).

Via registry I found out the following approaches:

• [HKEY_CURRENT_USER\Control Panel\Desktop] LogPixels = <custom scaling> Win8DpiScaling = 0 [1]

  Does not allow to distinguish between monitors.

• [HKEY_CURRENT_USER\Control Panel\Desktop\PerMonitorSettings\<MonitorName>] DpiValue = <level>

  Unfortunately, level here does not allow any scaling value but one between -6 and 1 [2].

So, how can I achieve my desired scaling configuration described above? Thanks for help.

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[1] https://www.tenforums.com/tutorials/5990-change-dpi-scaling-level-displays-windows-10-a.html [2] https://www.reddit.com/r/Batch/comments/4665jq/how_to_change_windows_10_display_scaling_via/