For such scenes, other renderers are also slow, but for example, Blender has excellent noise reduction, which is about 10 times faster than clarisse. In this scene, I don't dare to fill in the light at will, the lighting needs to be true and accurate. My material sampling needs to reach 10000spp to eliminate noise. If you use box+optix, once you add plants, the results can be imagined~
I used 2000spp sampling to render this for 8 hours. 1920*800. But there is still significant noise
I put the project file up,Hope to get a more effective solution, thank you
https://cowtransfer.com/s/f757c4ad260a4a
pass:873410