Noise with emissive filament of light bulb

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Hi all,

I'm hoping someone could take a look at this simple scene attached and help me understand why this emmisive object is causing so much noise.

I'm using aoktar's material preview scene and have tried toggling every switch, but still noisy.

Much thanks for the help!

[bepeg4d]

Hi,
there is thickness in your glass?
If not, than is better to use a glossy fake glass with falloff in the opacity:
viewtopic.php?f=21&t=23483
If you want to correctly simulate something like this you need to give thickness to the glass, use a specular material with fake shadow active, switch to PMC kernel and wait for a long rendering time
ciao beppe

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Thank you!