Fast Lane Check
Check whether your installed creations may have been affected by Bethesda's April 2026 Fast Lanes update. Answers one concrete question per creation.
Getting started
The tab opens to an empty state with three import options:
- Import Installed creations — pulls the list directly from your current installation.
- Import from snapshot — load a previously saved load-order snapshot JSON.
- Import from CSV/TXT export — accepts a list previously exported from the Installed Creations tab (useful for checking someone else's library, or an old library state).
Running a check
Once imported, each row has a Check button (Reset clears a row's result). Clicking Check compares the creation's current remote version/hash against the bundled April-2026 baseline snapshot.
Result tiers
| Tier | Meaning |
|---|---|
| Updated | Creation changed after the Fast Lanes baseline. Expect behavioral changes; revisit its description. |
| Likely updated | Version match is ambiguous; content hash differs. |
| Low risk | Creation updated, but its category (Weapons, Gear, Ships) is additive-only and unlikely to cause trouble. |
| Not updated | Identical to baseline. |
| Unaffected | Cosmetic-only category (Skins, Apparel, Body, Photo Mode, Audio). Fast Lanes changes do not apply. |
| Unknown | Not in the baseline snapshot, or API response was incomplete. |
Summary counters at the top of the tab show totals per tier; columns are sortable.
Category-based refinement
The Unaffected and Low risk tiers exist because raw version/hash comparison produces too many false-positives for cosmetic content. The refinement uses the creation's Bethesda API category to short-circuit certain comparisons. See Category tiers for the full mapping.
Internal references
- Feature 009 — Fast Lane Creation Check
- Feature 011 — category-based classification refinement