How does render distance strain the CPU?

Development Rendering
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Hi,

I am looking at games like Dead Island 2, Red Dead Redemption 2 and Minecraft and i see that while the render distance grows, the CPU load grows with it. Why is that happening? How is that CPU-intensive? Can’t you just minimize draw calls using batching of objects and thus the CPU remains nice and unloaded? What is the CPU working on?

Thanks.

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