diff --git a/macos/Sources/Features/Settings/ConfigurationErrorsController.swift b/macos/Sources/Features/Settings/ConfigurationErrorsController.swift
index 9956f7873..1dca58a1c 100644
--- a/macos/Sources/Features/Settings/ConfigurationErrorsController.swift
+++ b/macos/Sources/Features/Settings/ConfigurationErrorsController.swift
@@ -13,7 +13,15 @@ class ConfigurationErrorsController: NSWindowController, NSWindowDelegate, Confi
     @Published var errors: [String] = [] {
         didSet {
             if errors.count == 0 {
-                self.window?.performClose(nil)
+                // Only close the window if it was ever loaded: accessing
+                // `window` on an NSWindowController loads the nib (and our
+                // SwiftUI content view), which takes tens of milliseconds.
+                // This happens on every app launch via the initial config
+                // apply, when there are usually no errors and the window
+                // was never loaded.
+                if isWindowLoaded {
+                    self.window?.performClose(nil)
+                }
             }
         }
     }