In-app benchmark — Cull Me uP Turbo (26.1 s, 16 img/s) vs classic ImageIO (139.8 s, 3 img/s) on 409 Sony ARW — In-app benchmark · 409 Sony ARW · Turbo 26.1 s vs Classic 139.8 s (×5.4)

Performance Lab · the engine

RAW decode, faster.

Cull Me uP Turbo against Apple's classic ImageIO path — same folder, same Mac. The headline on our fastest real shoot — and below, the honest spread, because what you shoot changes everything. Scroll for the demo.

×5.4

faster than Apple ImageIO · Splash Dogs, 409 Sony ARW

See it move ↓

A real action shoot — 409 frames, 26.13 GB of ARW, and Turbo just gets out of the way.

Same Mac · no synthetic sets

Three real folders, three honest numbers.

Speed-up depends on what you shoot. Heavy pure-RAW has everything to gain; a mixed everyday library with thumbnails already baked in has less. So we publish all three — best case, a typical shoot, and the hard one.

Splash DogsFastest

×5.4

409 Sony ARW · 26.13 GB

Turbo26.1 s · 16 img/s

Classic139.8 s · 3 img/s

Arnaud Vélo

×2.4

587 Sony ARW · 36.65 GB

Turbo60.8 s · 10 img/s

Classic143.4 s · 4 img/s

Mixed library

×1.5

1,071 files · 6.34 GB

Turbo165.3 s · 6 img/s

Classic243.8 s · 4 img/s

Same hardware, same folders for both engines. Mixed library = DNG · ARW · JPG · HEIC · TIF — the everyday case where less of the work is heavy RAW decode.

See it move

A heavy RAW folder, in real time.

Opening, grid, full-screen review, Pick / Reject / Maybe — no theatrical editing, just the wait disappearing.

Demo slot — drop a real screen capture here; it preloads while you read and starts as you reach it.

Keep exploring

RAW decode, faster.

Three real folders, three honest numbers.

A heavy RAW folder, in real time.

More from the Lab.

Extended Performance media

Ingest benchmark video

Grid performance video

Large folder performance video