In modern enterprise environments, it's common to use laptops with a default display scaling of 150%, while external monitors remain at 100%. This mixed-DPI setup—despite having the same resolution—causes WPF applications to behave inconsistently:

• UI elements are resized unexpectedly
• Text becomes oversized or blurry
• Layouts break or overflow
• Critical functionality becomes inaccessible

This severely impacts usability, maintainability, and business productivity.

Request:

Please add a manifest setting or API that allows developers to force WPF applications to render at 100% scale, regardless of the system's DPI settings or PerMonitorV2 behavior.

Suggested options:

• Manifest tag:

  <dpiAwareness>fixed96dpi</dpiAwareness>

• API call:

  SetProcessDpiFixed96(); // Forces 96 DPI rendering

• Windows setting:
  “Allow apps to ignore display scaling” toggle for advanced users

Why this matters:

• Current DPI Awareness modes (system, perMonitor, perMonitorV2) do not allow full control over rendering scale
• Even with SetProcessDpiAwareness() or SetProcessDPIAware(), Windows 11 still enforces DPI scaling when dragging windows between monitors
• Developers have no reliable way to ensure consistent UI rendering across mixed-DPI environments

Impact:

This issue affects thousands of enterprise applications and users globally. It causes visual inconsistencies, functional errors, and user frustration—ultimately hindering productivity and contributing to economic inefficiency.