Hello.
At Photon Tracing kernel:
- "allow caustics" unchecked on glossy (or specular) material - brightness is correct on caustics
- "allow caustics" checked - this increases badly brightness on caustics (variable caustics* only is appearing by path tracing method at less than ~0.3 of roughness on glossy ground) - this is BUG.
--> Please should fix the "allow caustics" bugged for avoid the brightness increased for caustics.
* - Learn the "variable caustics" (new)