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FAQ: What does the warning "your current DPI does not match expected DPI..." mean?
Jono
Research Support Specialist
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Joined: Sep 2020
Posts: 380

#1
05-02-2023, 04:57 AM (This post was last modified: 01-21-2026, 12:17 PM by Dan.)
This warning appears when your computer's current display settings do not match the settings the experiment was designed for. This discrepancy can cause stimuli—especially text—to appear the wrong size or in the wrong location. This is usually caused by:
  • Display Scaling: Your operating system's display scaling is set to a value greater than 100%.
  • Resolution or Monitor Change: The monitor resolution differs from the experiment's target resolution.
The most reliable solution is to reset your display scaling.
  1. Right-click on your desktop and select Display Settings.
  2. Find the Scale and layout section, change the scaling percentage to 100%.
       
Note: For High-Res/4K Monitors setting scaling to 100% on a 4K screen may make standard text difficult to read. If this happens, try lowering your screen resolution (e.g., from 3840x2160 to 1920x1080) to improve legibility while maintaining compatibility.

Alternative Actions
  • Verify & Ignore: Run a test of the experiment. If the stimuli look correct despite the warning, you can likely proceed safely.
  • Clean and Rerun: If stimuli appear incorrectly, verify the project settings in Experiment Builder (Devices > Display > Resolution). Once confirmed, click the Clean button (broom icon) in the toolbar and run the test again.