SUPPORT THESE TUTORIALS https://www.patreon.com/cg_matter
MY WEBSITE https://www.cgmatter.com

In this blender (2.8) tutorial we go over how to use render regions. This enables you to render only a part of your view (speeding up cycles and render times)

Step 1:
Hit ctrl+b and select some render region

Step 2:
Enable border in the render output tab (if you only want to render the region)

Step 3 (Optional):
Enable crop in the render output tab (to crop into this regions during render)