Sample image of the previous render

Adaptive sampling, 16-64 spp, 98% confidence, tolerance 0.007, Halton w/randomization, render time 8 seconds

Sample image of the previous render

Adaptive sampling, 4-64 spp, 95% confidence, tolerance 0.01, Halton w/randomization, render time 4 seconds

Halton w/ randomization: 64spp, 18sec

Halton w/ randomization: 16spp, 4sec

Halton w/ randomization: 9spp, 3sec

Halton w/ randomization: 4spp, 1sec