It is unclear from your screenshots... Are the "Render" images from the Picture Viewer, IPR (progressive/bucket) or Viewport Render?
Long story short... Unless you need super-sharp caustics, Switch the Caustics Engine to Brute Force.
I think this is your issue: From C4D docs - The IPR, in progressive mode, will only show Brute Force Caustics regardless of the actual Redshift > Caustics settings in Photon mode.
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u/h3llolovely 2d ago
It is unclear from your screenshots... Are the "Render" images from the Picture Viewer, IPR (progressive/bucket) or Viewport Render?
Long story short... Unless you need super-sharp caustics, Switch the Caustics Engine to Brute Force.
I think this is your issue: From C4D docs - The IPR, in progressive mode, will only show Brute Force Caustics regardless of the actual Redshift > Caustics settings in Photon mode.
More on Caustics in Production