Corona takes a long time rendering

[danielmn322]

I've been using Corona for a while now and for some reason after doing a few test renders of a scene the GI calculation and the rendering starts to go slow, rays starts to go down really quick even tho there's not a lot going on in the scene or froze the computer while calculating or preparing the scene to start to calculate, any one knows why? I can't take a screenshot since PC is froze, happens n two PC's and I'm not using a lot of geometry it's just two low poly figures from Daz3d

[Beanzvision]

Are you able to share the scene for others to test?

[danielmn322]

It's a bit heavy cause of the textures so I'm uploading it to google drive, Btw this happens in a lot of scenes, I do test renders cause Interactive render it's a bit slow for me but after a few test renders it does that thing where it goes really slow

Scene file with tex: https://drive.google.com/file/d/18kA1ueqIaJlw23riFi5VAt9e2NJP3qjE/view?usp=sharing

[Beanzvision]

Well for me it took about 30secs parsing before the render started. As for the slowness of the rendering I think that is due to the SSS you have in your materials. For this render I did 5 passes for around 1:30min. 

[danielmn322]

Ohhh wow SSS looks different from the ones I've made before, looks like a candle even tho I followed the tutorial that Coronas website has, any way to explain to me how to set up a better SSS?

[Eddoron]

If you followed the old tutorial, that means you've been using the volumetric method. The newer versions of Corona have a dedicated SSS mode in the volumetrics tab. You just have to chose that.

[danielmn322]

I Used the SSS Mode I even still remember settings: this is the one I followed https://corona-renderer.com/stuff/helpdesk/sss/sss-skin-mat.png and came from this page: https://coronarenderer.freshdesk.com/support/solutions/articles/12000039649-what-are-the-two-available-sss-modes-

[danielmn322]

This is the SSS set up I have

[Beanzvision]

Ohhh wow SSS looks different from the ones I've made before, looks like a candle even tho I followed the tutorial that Coronas website has, any way to explain to me how to set up a better SSS?

I didn't change any of your settings, I just hit render. ;)
For better SSS keep an eye on the distance scale, if your model/scene is to scale, using real world settings (distance) would be ideal.

[Eddoron]

Now I downloaded it too. SSS is scale dependent.
Yes, you really have to keep the scales either realistic or proportional to the objects. the legs are barely a cm long.

[danielmn322]

Guys Thank you, I did a fresh windows install to see if it is that, I'm gonna play with the SSS 'cause I didn't know that I knew about volumes, if I make the figures bigger it will take a lot of RAM

[Eddoron]

Making the objects bigger doesn't take more ram.

[danielmn322]

Not sure why but it doing it with this PC, I made them bigger and it started to slow down the viewport and I have to add grass to it

[Eddoron]

The only thing I can imagine is that it's already slow and when scaling up, it seems to be slow.

And why do you have to add grass?

[danielmn322]

I don't know I have 8GB of ram just like the other pc and on this one everything seems to go slow even tho is a new pc, even the video card is the same size when I play videos on youtube it starts to get slow which is weird, the grass is to give it more depth to the scene seems way too simple