blender rendering settings

 By trial and error, for neuronDuplicated scene, fast rendering with acceptable quality - Blender Cycles render:

Noise threshold Off

Max time 1 seconds, 

1024 max samples, 

denoise on - seems to be fastest with good results.

For 3 cubes with video textures, 

0.5 noise threshold

4096 max samples

Max time 1 sec

denoise off

seems to be fastest with good results.