Thanks a lot for the very quick response. I have set it up now 🙂

Under FEATURED IMAGE dropdown, I see different sizes.

If I select a Thumbnail or Medium or Magazine Plus Thumb, they are in the range of 150×150 or 300×300. So the images are blurred.

If I select 1024×1024 or Full original, I see very clear images.

But will this affect the load time of the page? I want my page to load as fast as possible. I had load time issues in my earlier theme and that is why I’m changing theme now.

Regards!