Find what made Unity builds slow. See where the extra time went and rank the likely commit, asset, package, or cache cause against a healthy baseline.Verified working in Unity 2022 and Unity 6.A slower build is easy to notice and hard to explain. Build Time Regression Doctor records each player build, compares it with a healthy baseline, shows where the extra seconds went, and ranks the project changes most likely to explain the regression.What it helps you doBreak build time down by Unity build stage and recorded callback.Capture Editor log evidence such as shader compilation signals that BuildReport does not contain.Compare a slow build with a committed or local healthy baseline.Rank changed assets, packages, settings, cache state, and source revisions against measured time deltas.Set absolute and regression budgets for local review or CI.Run an optional Git bisect in a clean temporary worktree to find the first measured-slow revision.Export JSON, Markdown, self-contained HTML, JUnit, and SARIF reports.Use it when build duration jumps after a merge, a cache change makes CI unpredictable, or a team needs evidence before spending hours on build optimization.The tool reports what Unity exposes and keeps unclassified time visible. Correlation is ranked evidence, not proof that a changed file caused the slowdown, and noisy machines still need controlled baselines.Read the complete documentation.PRODUCT TYPEEditor-only build-time recording, regression diagnosis, budgeting, and CI gate.REQUIREMENTSUnity 2022.3 or newer.Player builds must run through Unity's normal build pipeline.Git is optional and required only for revision evidence and automated bisect.KEY FEATURESAutomatic recording of BuildReport totals, build steps, callbacks, and Editor log signals.Healthy baselines with absolute and regression budgets.Stage-by-stage delta in real seconds.Ranked evidence for source, asset, package, settings, cache, and environment changes.Optional Git bisect in a disposable worktree; the current working tree is never checked out or changed.Deterministic JSON, Markdown, self-contained HTML, JUnit, and SARIF output.Batch mode with CI-friendly exit codes.IMPORTANT LIMITSUnity does not expose every internal build operation as a distinct timed stage; unknown time remains visible.Ranked causes are evidence-backed hypotheses, not guaranteed causation.Comparisons are only meaningful when build target, configuration, and machine conditions are controlled.The tool does not optimize project content or rewrite build settings.Full documentation.AI-assisted image generation was used for the package icon artwork, and AI-assisted drafting was used for marketing copy and documentation formatting. All technical claims were sourced from the package, and the code, functionality, layouts, exports, and final text were manually reviewed and verified.
