Vray IES and large spaces to fill

[AndresAhumada]

Hello colleagues.

He wanted technical assistance and theory of behavior based on photometric lighting files.

In the office where I work 95% of the jobs are shops. No natural light, everything is luminaires and lighting equipment.

I have three methods to fill these spaces of light that are often only a section of a whole big tent (corners).

Only use Vray lights
Combination of Vray Lights and VrayIES
Only VrayIES

I light reflections and effects of contour map HDRI indoor shops or horizontal studio lights.

But I have been very complicated when I use IES (IES VrayIES or 3d max).

A lot of noise in the specular areas and long render times. This is in corners of 8 x 6 mt.

It's even worse when I have to illuminate large stores of more than 30 x 30 mt. I try to fill the space with lights VrayPlane.

And Ies accentuate the furniture and all areas that have specific luminaires.
Sometimes are more than 500 lights.

There is some method to improve the fuzzy quality of the IES IES Vray or 3d max?

I've been testing with Tarject Spot lights 3d max (standards) with vrayshadow and is far better and very fast. But without the nearly exact capacity of IES.

Any advice?

Greetings to all.

[AndresAhumada]

Anyone can help?

[jackieteh]

Try untick the affect specular in VRayIES light.

[tashko.zashev]

Try to adjust the Probabilistic lights parameter if it's enabled.
I can see lot of glossy surfaces in the attached image, have you put enough subdivisions for the reflections?

[alexyork]

Yes Probablistic Lights is probably causing a lot of noise issues, since it's very hard to control (maybe impossible?) which lights receive priority for samples. In my experience this setting has caused nothing but problems so I disable it on all projects. This way you can manually assign larger samples for lights that really need them.

[AndresAhumada]

Hi all..

Thanks for your answers.
As he says the probabilistic alexyork lights generate a lot of noise.

Outside those technical to light with little noise aspects it is to establish a method that allows me to generate more clean results unfilled scene IES ....
Without knowing how it works thoroughly IES, which has the option of MIS in the parameters. This is loudest in the most enlightened points.