Perhaps I’m missing something, but when I use path tracing as a baseline, and then compare that to using RTX GI on, upping the samplesPerPixel and Max Bounces, I’m still lacking a lot of energy or bounced light. Here are some examples starting with the most simple:
The first image is path tracing. The second is with GI on, set to 4spp and maxBounces set to 4. Setting maxBounces any higher doesn’t result in any change in apparent light.