SceneQuant — Scene & Render Optimizer

SceneQuant is a free Blender addon. One button, Make it Fast, cuts Cycles wall-clock render time with little quality loss, then you can revert everything.

What the click does: plans adaptive sampling, OIDN, bounce/clamp, light tree, caustics, camera cull, dead geometry, GPU denoise, and related levers. Applies them through a journal. Draft / Fast GI / resolution tricks are not in the default click.

Also included: Analyze, Fit to Budget (VRAM), Probe Sample Knee, Verify Render, Revert All.

0.3.0: Classroom 2:43 to 1:35 (41%), loft 5:37 to 2:41 (52%) on Blender 4.5.5 LTS OptiX, loft 5:50 to 2:12 (62%) on Blender 5.1.2. Same machine: RTX 2080 Super Max-Q 8 GB, i7-10875H, 16 GB. Already-tuned files may only move a little. Not a 50-70% promise on every scene.

0.3.1: Sample-knee probe is linear EXR + OIDN. Auto eps 0.015. Cheap probes pad one doubling.

0.3.2: Persistent Data on stills (next F12 keeps the BVH). Transparent shadows cap 4 when the scene proves alpha/glass.

0.3.3: Opaque cutout shadows off on proven CLIP/HASHED cutouts. Public Classroom claim stays 41%.

Install: Edit, Preferences, Add-ons, Install from Disk, scenequant-0.3.0.zip