Update frame on all play calls when skipping animations, so as to provide a rapid preview during scene loading

manimlib/scene/scene.py

@@ -545,6 +545,10 @@ class Scene(object):
             if self.inside_embed:
                 self.save_state()
 
+            if self.skip_animations and self.window is not None:
+                # Show some quick frames along the way
+                self.update_frame(dt=0, ignore_skipping=True)
+
             self.num_plays += 1
         return wrapper