Project Motor Racing — Update 1.5.0.1

28. November 2025

An update for Project Motor Racing is beginning to roll-out across all platforms. This patch brings dozens of fixes and improvements across the board, including important enhancements to GT3 and tweaks to LMDh.

Patch Notes

Online & Multiplayer

• Added a new warning message when the game client is outdated and cannot play online.
• Fixed a missing callback that caused version-mismatch connection failures.
• Fixed an issue where selecting a lobby on a different backend prevented selecting other lobbies - lobby details are now fetched only when attempting to join.
• Fixed a Lua error caused by incorrect parameter order during failed Social Event matchmaking.
• Fixed an issue where players could fail to sign in due to legacy avatar data.
• Improved shutdown handling of audio graphs when network users disconnect.
• Improved server performance.
• Fixed a crash caused by processing the lobby list twice.
• Fixed missing text in the player reporting dialog.
• Fixed a crash when finishing a Social Race.

Stability & Systems

• Added protection in audio code to prevent rare invalid value (“NaN”) errors.
• Addressed fast-math divergence between platforms to improve simulation consistency.
• Fixed incorrect vehicles showing up in License Test after starting an Endurance race.
• Added additional null-pointer protection and increased memory headroom for True-Track presets to resolve rare crashes.
• Fixed a memory leak in True2Track preset handling.
• Improved code logic to prevent unexplained crashes during audio and gameplay operations.

Gameplay

• 1st infringement penalty warning added based on feedback.
• Disabled frame-rate limiter during replays.
• Tyre Warmer setting now defaults ON in new profiles.
• Fixed an issue where certain vehicle setup values were not applied to physics when loading setups.
• Removed debug Page Up/Page Down camera-cycle keys.
• Reduced skid-audio sensitivity on dry tyres for clearer feedback during understeer.
• Improved pit-exit behaviour - overlapping exit lines no longer allow unsafe merges.

First-Time User Experience (FTUE)

• Fixed soft-lock and backspace issues during calibration.
• Updated FTUE assist presets to better values.

Driver AI

• Improved AI lateral awareness to combat AI driver blind spots.
• Improved AI driver engine stall restart logic.
• Enhanced AI logic to help combat AI to player collisions.

Vehicles

General Fixes

• Mazda RX-7 - Added front chassis blocker.
• Panoz Esperante GTR1 - Updated diveplanes and corrected attachment across all LODs.
• Porsche 911 GT3 (2004) - Improved cockpit mirror vibration.
• Camaro ZL-1 GT4 - Adjusted brake-light physical position.
• Corvette C5R, Mercedes CLK-LM, Toyota Supra GT4 - Added missing window-banner shadow meshes.

LMDh

• Fixed low-level fast math optimisation affecting tyre surface.
• Enhanced traction-control behaviour at low speeds.
• Iterated on cold-tyre falloff and steering-rack speed.
• Aston Martin Valkyrie: applied new performance data as part of pad-driving fixes.
• Additional manual adjustments applied to support improved drivability based on player feedback.

GT Classes

GT3

• Fixed low-level fast math optimisation affecting tyre surface.
• Standardised steering, tie-rod, and damping stiffness for a tighter, more unified feel.
• Improved default setups to all GT3 cars based on player feedback.

GT3 Handling revision:

• Fast math optimisation reverted in engine inertia.
• Updated throttle-blip behaviour.
• Cars now roll more naturally into corners, (note: may require brake-bias adjustments).

GT4

• Improved default setups to all GT4 cars based on player feedback.

Cup & Other Classes

• Fixed low-level fast math optimisation affecting tyre surface.
• Porsche 992 Cup - Improved default setups based on player feedback.

Tracks

Nordschleife

• Reduced brightness and opacity of ground and wall graffiti.

Other Tracks

• Zolder - Reopened garages that were unintentionally closed.
• Nürburg GP - Restored missing dressing for Sprint layout; added dressing across all variants.

Audio

• Improved exhaust attenuation for the Valkyrie.
• Updated Valkyrie audio: added subwave, rebalanced exhaust, boosted mid frequencies.
• Replaced and remixed engine audio for the Porsche 963 and Peugeot 9X8.

Input, FFB & Hardware Support

Newly Supported Devices

Steering Wheels / Wheelbases / Shifters

• Aiologs H-Pattern Shifter
• Generic H7R Shifter
• Hori FFB Truck Control System + Shifter
• SimLab SQ-1 Shifter
• Cammus C12 Wheel
• Cammus C12 Wheelbase
• Lunatech AMG GT3/GT4 Wheel
• Pokornyi GTE Pro Wheel
• El-Halo-X Wheel

Pedals

• Simagic P500 Pedals
• Cammus LC100 Pedals
• MECA CUP1 Pedals
• Simjack Pro Pedals
• 3DRap HC01 Pedals
• Updated Heusinkveld HE Sim Pedals (DIView calibration support)
• New HE variant with updated VID

Controllers / Boards

• Generic Key Control Console Button Box
• Arduino Leonardo–based devices
• Additional PXN wheelbase devices

Fixes

• Updated Simagic P1000 Pedals to correct an outdated PID.
• Fixed an issue affecting some Logitech wheels around rotary dials.

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