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Blender 3.0 is insanely slow for me on cpu. Its fast in the viewport but the rendertimes are 2-3x slower than 2.93. I really want to use the geometry nodes and other improvement s in 3.0. Is there a way to use the 2.93 tile rendering system with 3.0? I really dont want to have to work on an outdated version of blender until this thing gets fixed.

Specs:

Cpu: intel i7 4790k Gpu: No gpu Ram: 16gb ddr3 1600mhz

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  • $\begingroup$ Maybe you can share a File where you encounter this problem. blend-exchange.com $\endgroup$
    – J.Doe
    Dec 6, 2021 at 14:31

2 Answers 2

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Go in the Properties Editor > Render tab > Performance panel > Memory subpanel. You can set the tile size here. It's at 2048 by default.

render settings

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Tiled Rendering will be slower in almost all cases than the new Systems. Your problem most likesly comes from another Source.

With CyclesX there are improved algorithms that decide automaticly and more fine grain where to render how mutch, and dont waste render time on already converged areas. This allows for a more user centered approach letting you decide in genereal how noisy of an image or how mutch rendertime is okay for you - instead of fiddeling with numbers and see wat comes out and retry if it wasn't okay.

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