Hello,
This Windows 10 issue is fixed in a Windows Insiders 20H1 builds.
We are waiting on Microsoft decision to service the fix to Windows 10 v1903 through the monthly patch. It affects multi-GPU systems with indirect displays like USB graphics and Miracast wireless projection.
The workaround is to keep your laptop screen enabled and as main display BEFORE you launch your application.
Regards,
Alban
Ref 30112
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