Shader Lagging (No Movement) if Not Holding Middle Mouse Button

hello, so i am learning Shader Graph in unity from a YouTube tutorial but face this weird problem where movment in shader is not working Until i hold my middle Mouse Button, when holding Middle Mouse Button it is working as Expected, I am using Unity 2019.4.7f1 Latest LTS Version,

TUTORIAL I AM USING

MY VIDEO, SHOWING THE PROBLEM

NOTE: i couldn't found section for Shader Graph so i am creating this Thread in Genral.

 

Your video is private, so we cannot see it.

 

i am Really Sorry about that, here you go

 

Click the icon next to the speaker icon in the scene view toolbar. You have "Animated materials" turned off.

Without this, the time value in shaders isn't updated unless the scene view refreshes (eg, moving the camera or selecting objects).

 

can't believe it was that simple thank you very much