Hi Adnan,

The responsive view should look something like this(http://take.ms/MnFo5).

It seams to me that it isn't.

Perhaps you can provide us a screenshot as to how your grid page looks and what device are you using to view the page?

Is it possible to turn off Showcase in grid layout?

There is no setting to turn off the showcase in grid layout. If you really want to, you would have to template override the grid theme file(http://take.ms/QIpOC).