another vray material light issue

hello

did i need to avoid totally of using vray light material in my scenes??

why when i using corona in the same scene this is not happen

can i understand finally as a daily vray user if in the next sp vray light material will not produce so much noise?

valdo.. if you need the scene is here

scene

Dont use the Direct Illumination option, instead just get faster and cleaner renders with using it as a “GI” light
Also tick “Compensate Camera Exposure”

i checked this.. its even create more noise :frowning:
you can download the scene

It’s because the glass/plastic on the front face does NOT have “Affect shadows” enabled. Enable that on refraction and it will be much better