Transport Fever 3 Build 40420 Patch Notes — Performance, Crash & Mod Fixes

Quick facts

Build

40420

Channel

Steam Stable

Released

2026-10-08

Platform scope

Steam Windows, macOS Apple Silicon, Linux

Other stores / consoles

40420 rollout unconfirmed by their numbered notes

Independent benchmark

Not performed

Platform scope

Steam Stable 40420 is documented on October 8, 2026. The PC notes do not confirm that Epic/GOG or consoles received the same patch. Their latest numbered official entries and the announced rollout are displayed separately. Check the installed build in the main menu; a manual or support source check is not an independent live-build test.

Performance changes

Steadier FPS with town and vehicle HUD icons. Faster rendering in some camera movements. Improved rendering with data layers active. Better graphics-memory management across configurations.

Modding changes

Improved Model Editor generation of vehicle-store images. Clearer validator messages for missing mods. Improved internal scripting API functionality. Improved mod-validator file checks. Fixed staging-area mod dependency crash. Fixed non-built-in mod auto-activation.

Crashes changes

Fixed crash after repeated F9 screenshots. Fixed rare crash updating UI elements. Fixed rare catchment-rendering crash. Fixed rare random rendering crash.

Construction changes

Fixed opening new construction from module builder. Fixed construction-menu errors caused by faulty mods. Fixed station bulldozing with its window pinned. Fixed controller opening of disabled layers. Fixed stop-terminal assignment on modded asymmetric streets.

Graphics changes

Fixed reset applying hardware-specific graphics defaults. Fixed street markings at high experimental-map coordinates.

Airport changes

Fixed flickering airport fences. Fixed some airport-hangar construction failures.

Tycoon changes

Fixed Tycoon Mod perk unlocks on townless maps.

Vehicles changes

Fixed vehicle-store icon colors.

Tram changes

Fixed tram-depot door animation.

Interface changes

Fixed minor localization errors.

Campaign changes

Fixed rare Mission 2 signal-task error.

Map Editor changes

Fixed Map Editor construction-button positions. Fixed Map Editor Keep Heightmap behavior.

How to confirm the installed patch

Open the main menu and record its build number before comparing it with the release notes for your own store. A missing mod update is a separate version question. Use the linked performance, mod, Mission 2 and Map Editor references to inspect the system affected by a particular change.

What was not measured

No independent benchmark performed. No measured FPS percentage, hardware ranking, universal crash fix or console equivalence is inferred from these release notes. Residual failures should be reported with the build, mod list and reproduction evidence.