Trying to get the most out of Vray RT and Forest Pro

[stayinwonderland]

I'm using vray 2.4 and forest pro 4.

 

On a medium scale scene with some dense grass a few trees/bushes it's so slow that it's kind of pointless using it. The GPU is as slow as the CPU but tends to hang. Overall it will give me a very poor still after a minute or two of initial calculations and then won't update ever again when I change something in the scene.

 

Current spec is i7-4770, 16 gb, Nvidia GTX 660 (obviously mediocre).

 

I tried Octane and that was crazy fast, but I'm not sure it's materials are going to be good for arch viz stuff compared to vray. Shame though as it's the fastest thing out there.

 

So I'm thinking the only way forward is to get more graphics cards and stick with vray. Would welcome any advice. I guess the other thing is, my budget is not so good so this is about speculatively looking ahead and weighing up my options. I gotta have some real-time foliage as these 10 minute delay times between iterations are killing the quality of my work.

[Nicolai Bongard]

There is a tutorial about how to use different LODs on your objects with forest pack, perhaps you should look into that and just set the distance to be really low when you use RT and just show some lowres placeholders, and then crank it up when you do final renders? Allthough vray RT is pretty awesome, it is not some sort of magical everything is gonna render superfast feature of vray, so if you put lots of complicated stuff in your scene its obviously going to render slower.

[RyderSK]

From what I've seen VrayRT went through heavy improvements with latest versions.

 

Octane has absolutely no issue with materials, tons of great archviz work has been done with it by many artists.

[stayinwonderland]

Thanks for the info guys, very useful.

 

And that is interesting about Octane. I assumed it just couldn't live up to Vray's standards and was maybe more for simple scenes. So, have you ever used it, have you ever considered using it longer term and would you recommend it as a potential replacement for vray to speed things up?

 

(only issue for me is that the demo crashes constantly)

[RyderSK]

I am myself perfectly satisfied with Corona, no plans to change to anything else any soon.

 

To check some archviz work with Octane, see Daniel's work [ link ], but there are tons more. It's very popular engine these days but not exactly attacking the top position.

[stayinwonderland]

Cool, just looked at his stuff. Amazing. I'll give Octane a full try out.

 

Thing is with Corona, I don't see it having much speed difference in the real-time. Am I wrong?

 

Also curious as to why you like it over Vray (or anything else)? I know very little about it.