Notify winit before presenting frames

Reviewed-on: iris/iris#5

src/default/render.rs

@@ -45,6 +45,7 @@ impl UiRenderer {
         }
 
         self.queue.submit(std::iter::once(encoder.finish()));
+        self.window.pre_present_notify();
         output.present();
     }
 
@@ -115,7 +116,7 @@ impl UiRenderer {
             format: surface_format,
             width: size.width,
             height: size.height,
-            present_mode: PresentMode::AutoNoVsync,
+            present_mode: PresentMode::AutoVsync,
             alpha_mode: surface_caps.alpha_modes[0],
             desired_maximum_frame_latency: 2,
             view_formats: vec![],