slow rendering.. really slow

[ae28402dk]

Hi, I'm testing corona 2-3 weeks. Always was rendering so fast, but today is so slow. 13 passes in 90 minutes (res 3700x2080 pix)...
I have hdcache. i7, 16gb ram, 2g graphic.

What can I do to make rendering faster?

[Ondra]

Are you using motion blur?
Portals?

[ae28402dk]

No motion blur, no dof, or any other unusual effects.
I stopped rendering and started again, but it's still slow, initial pass in 10 minutes, it always was only few seconds. :(

[rafpug]

You used materials with high values ​​of refraction?

[ae28402dk]

yes, but it was never a problem for corona on my computer. In my last scene I used more materials with high values ​​of refraction, but rendering was 10 times faster.
Could it be a problem with 'visibility for camera"? Because I have hidden some objects.

[rafpug]

1 - What are these objects?
2 - The scene is outside or inside?
3 - Is converted into a scene full crown or designed from scratch to you?

Give it a try and reset the render settings

[ae28402dk]

1. 6 or 8 glasses, and few kichen accessoires
2. inside (it's a kitchen)
3. designed by me

I was restetin corona setting 3 times, but it doesn't work, it's even crashing when rendering :/

[rafpug]

uninstall corona

and installs .

[Polymax]

You use last DayBuild?

[Ondra]

ok, give me the scene, I'll take a look

[ae28402dk]

Problem solved, I finished rendering after 36hours and only 300passes, closed the scene, and opened several times, and everything came back to normal. I think it's another bug in corona alpha. 

[Ondra]

By any chance, are you using max 2014?

[ae28402dk]

Yes, 2014, could it be because of that?

[Ondra]

Yes, there is a bug that causes some textures to be EXTREMELY slow when 3dsmax is first run. Usually just stopping/restarting rendering works.

[ae28402dk]

Thank you for your reply, even with bugs I'm truly impressed by corona :)