difference between preview- and productionrender when using refraction

[tschnabel]

hi there,
why is it that glass and liquids look completely different when i start productionrenders? when it looks fine in the preview it always refracts too much in the final rendering.
thanks,
tim

[sirio76]

IPR only use limited trace/GI depth, it’s also brute force only while production use BR/LC by default. If you want to keep IPR look you can decrease trace depth global parameter and use no secondary GI bounce.

[tschnabel]

Ah, ok! Thanks a lot!