caisson posted at 4:29 PM Fri, 31 March 2023 - #4460231

The Superfly render engine has changed a lot under the hood. In P12 one thread would render one bucket, so you'd set the number of buckets to match the threads available for CPU rendering. However in P13 that has changed - all threads render one single bucket at a time.

Two options - either increase the size of the bucket (more threads = bigger bucket, though RAM will play a role too) or switch Progressive Rendering on which will then ignore the bucket setting.

The Log will give you an exact time for each render to compare different settings.

In addition, I've found that P13 needs less samples than P12, I'd suggest try halving the setting first. With both P12 and P13 installed you should be able to do some comparisons. Also the Denoise post-process option is imo better than P12.

Basically I've found that P13 is significantly faster for me.

Thanks for this!

I came, I rendered, I'm still broke.