reduce minimum delay to 25ms

extension.js

@@ -634,7 +634,7 @@ function windowGrabBegin(meta_display, meta_screen, meta_window, meta_grab_op, g
 		}
 		if (meta_window.resizeable && config.preview.enabled) {
 			app.origFrameRect = app.get_frame_rect();
-			Mainloop.timeout_add(500, function () {
+			Mainloop.timeout_add(config.preview.delay, function () {
 				checkIfNearGrid(app);
 			});	
 		}	

prefs.js

@@ -162,7 +162,7 @@ function buildPrefsWidget() {
         visible: true
     });
     let previewDelayAdjustment = new Gtk.Adjustment({
-        lower: 100,
+        lower: 25,
         upper: 1000,
         step_increment: 1
     });

schemas/org.gnome.shell.extensions.wintile.gschema.xml

@@ -32,7 +32,7 @@
       <default>500</default>
       <summary>Delay in ms before preview dislpays</summary>
       <description></description>
-      <range min="100" max="1000"/>
+      <range min="25" max="1000"/>
     </key>
     <key name="debug" type="b">
       <default>false</default>