diff --git a/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp b/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
index c917a90e5b..ffb3905adb 100644
--- a/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
+++ b/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
@@ -1010,6 +1010,12 @@ void OpenGLDrawingContext::HandleTransparency()
 
 void OpenGLDrawingContext::SetDPI(rct_drawpixelinfo* dpi)
 {
+    if (dpi == _dpi)
+    {
+        // Don't need to recalculate anything if identical.
+        return;
+    }
+
     auto screenDPI = _engine->GetDPI();
     auto bytesPerRow = screenDPI->GetBytesPerRow();
     auto bitsOffset = static_cast<size_t>(dpi->bits - screenDPI->bits);