This scaling problem in Adobe Muse is encountered when you set Windows Scale settings to 125%. Adobe Muse renders its user interface at 100%, 150%, or 200% depending on the Windows Scale settings and the environment variable. If the environment variable is not set and the Windows Scale setting is set to 125%, then the Adobe Muse user interface displays at 150% resolution.
If you prefer to keep your current Windows Scale settings, you can set an environment variable to force Adobe Muse to render its user interface at 100%.
Windows Scale settings impact the overall Windows screen display. You can add Environmental Variable value to control only settings for Adobe Muse and not impacting the overall Windows display.
- Right-click the Computer on your Desktop and Choose Properties.
- In the System window, click Advanced System Settings in the left pane.
- In the System Properties window, select the Advanced tab and click Environment Variables.
- Click New in the System Variables section. You can also set it in User Variables section, if you want to keep the change limited to currently logged-in user.
- In the New System Variable dialog box, enter MUSE_UI_SCALE_FACTOR in the Variable Name field.
- Enter 1 in the Variable Value field.
- Click OK.