Like DeadClown said, looks like in your image most noise comes from direct light (there is no noise in dark areas) so you can try raising LSM (light samples multiplier).
Thanks Maru.
Yes, I made some changes. Fist, I delete my IES and put a Light material in the spots, and second, I increase the LSM to 5.
But for this render, I wait 21h in my i5 and it takes 127 passes (3500x2475px)
I think Its not very useful in render production for my. But anyway, a put another image to find the corret settings for make it more faster.
Some time ago I buy a license for Maxwell render, first in beta process and then I pay the upgrade to 2.0 version. But I never use it for the same reason, very slow, and imposible to find the correct setting for a reasonable speed/quality images for production. I only speak for my personal experience and my self.
Its posible, or very dificult, to make a presets library and integrate it with the release for the common situations? You now;
low quality, draft, interior, exterior ... like solid rocks for vray. Then you can change all the setings if you want.
Is my humble opinion, and a lot of thanks for your support.
(Sorry for my critics, and my bad english)