How to resolve VST UI scaling issues in Reaper 6

October 23, 2021

A simple fix that’ll help Reaper scale VST UIs up on HDPI screens on Windows 10.

I was unable to run BIAS FX 2, because my high HDPI screen would only render a quarter of the VST UI.

This simple requires changing a setting for the Reaper executable.

Right-click the reaper.exe file -> Select Compatibility -> Select Change high DPI settings -> Enable Override high DPI scaling behavior and select System in the dropdown as shown below:

reaper 1 high dpi

Select Change high DPI settings

reaper 2 high dpi

Use System for scaling

Now your VST UI should look completely normal:

reaper 3 high dpi 1024x562


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