Refraction problem on glass material

[Daskydesign]

Hi,
I'have a problem with a glass material (I've used a official glass material)
As you can see the result is not good, the refraction is too jagged.
I would like to have a more smooth refraction.
Someone can help me to solve this problem?
(I attach a render)
Thanks

ps. I have this problem only in close-up render :/

[Bzuco]

check this post, it seems to be similar problem with refl./refr.
https://forum.corona-renderer.com/index.php/topic,16256.msg102507.html#msg102507

[Daskydesign]

thanks, but is not the same solution, I tried different solutions but the only one that works fine is very hard turbosmooth.
I don't understand why :/

[maru]

Hi, could you share the scene with us privately? You can host it on Dropbox and send us the link to support@corona-renderer.com.