Change editor FPS limit for unfocused mode back to 20 FPS

This was changed in 7991d0fb228c4bfb669a1a541267b8fbb1a78682 but seems to cause issues
for some projects when using the profiler.

Fixes #51222.

editor/editor_settings.cpp

@@ -334,7 +334,9 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	_initial_set("interface/editor/dim_editor_on_dialog_popup", true);
 	_initial_set("interface/editor/low_processor_mode_sleep_usec", 6900); // ~144 FPS
 	hints["interface/editor/low_processor_mode_sleep_usec"] = PropertyInfo(Variant::REAL, "interface/editor/low_processor_mode_sleep_usec", PROPERTY_HINT_RANGE, "1,100000,1", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED);
-	_initial_set("interface/editor/unfocused_low_processor_mode_sleep_usec", 100000); // 10 FPS
+	// Note: Don't go low on the editor unfocused FPS, as it seems to cause stalls in the game
+	// when using the profiler (see GH-51222).
+	_initial_set("interface/editor/unfocused_low_processor_mode_sleep_usec", 50000); // 20 FPS
 	// Allow an unfocused FPS limit as low as 1 FPS for those who really need low power usage
 	// (but don't need to preview particles or shaders while the editor is unfocused).
 	// With very low FPS limits, the editor can take a small while to become usable after being focused again,