Project Motor Racing Update 2.3: Patch Notes & Performance

Straight4 Studios and GIANTS Software have released Project Motor Racing update 2.3, paired with the subsequent 2.3.0.1 hotfix. The major update introduces the road-going Lamborghini Temerario alongside a new Track Day vehicle category, an overhaul of environmental lighting and tone mapping, physics retuning across multiple classes, and expanded multiplayer quality-of-life features.

This guide details the complete patch changes, platform-specific additions like console UDP telemetry, and the observed performance impacts across PC and PlayStation 5.

Overview of Major Additions

Update 2.3 focuses on baseline simulation physics, visual consistency over complete 24-hour cycles, and vehicle balance.

New Vehicle: Lamborghini Temerario & Track Day Class

The headlining content addition is the Lamborghini Temerario, introducing the Track Day category to the base game without requiring separate DLC purchase.

• Powertrain Specifications: The in-game car simulates an all-new 4.0-liter twin-turbo V8 engine producing 789 brake horsepower (revving to a 10,000 RPM redline), paired with three electric motors to deliver a combined output of approximately 907 horsepower through an all-wheel-drive hybrid system.
• Phased Four-Wheel Steering: The simulation actively monitors driver inputs and available traction. Below 75 km/h, the rear wheels steer up to 3.0 degrees in the opposite direction of the front wheels, effectively shortening the vehicle's wheelbase to improve rotation in hairpins and low-speed complexes.
• Driver Impressions & Handling: Community testers noted that while force feedback delivers clear weight-transfer sensations under braking, the car demands substantially longer braking zones than GT race machinery. Brake balance adjustment is unavailable on the stock profile, and drivers must initiate deceleration earlier to avoid understeer when rotating into apexes.

Class-Specific Physics and Vehicle Balance Changes

Update 2.3 alters how several core classes interact with tire limits, high-speed stability, and aerodynamic platforms.

GT3 and GT4 Categories

• Tire Grip and Over-the-Limit Behavior: Developers reworked the grip model so tires provide better tactile feel and control beyond the limit, eliminating an older exploit where unnatural oversteer provided excessive forward traction. Cold tire grip levels and directionality have been increased.
• Aerodynamic Platform Stability: High-speed stability has been adjusted to reduce pitch sensitivity under hard braking and throttle lifting.
• Class Fixes: GT4 vehicles received a fix for a tire-wear overflow bug alongside updated differential flex.
• Specific Car Tweaks:
  • Ford Mustang GT3 & Porsche 911 GT3 R (992): Received updated engine Balance of Performance (BOP) and updated aerodynamic profiles. The Mustang GT3 also received adjusted front static rake.
  • Ford Mustang GT4 & Porsche 718 Cayman GT4 Clubsport: Updated engine BOP. The Cayman GT4 Clubsport also received corrected default toe-angle settings to eliminate wandering on straights.

LMDh Prototypes

• Tire Thermodynamics: Improved tire heat generation, load sensitivity, and separation between different tire compounds.
• Aero and Brake Ducts: Improved aerodynamic drag behavior across varying ride-height, pitch, and yaw angles. Brake-duct behavior now links dynamically to aerodynamic drag and tire temperatures.
• Chassis Stability: Improved overall platform stability under hard braking and high-speed corner rotation.

Other Vehicle Fixes

• N-GT: Updated gearbox flex and handling based on historical real-world telemetry data.
• Aston Martin Valkyrie Hypercar: Corrected default setup toe angles to reduce wandering on straights.
• Aston Martin DBR9: Corrected cockpit mirror pivot alignment.
• BMW M3 GTR (E46): Removed dark graphical spots appearing on the windscreen in cockpit view.

Lighting, Weather, and Visual Rendering Changes

A significant portion of version 2.3 addresses long-standing complaints regarding dynamic range, washed-out tones, and extreme contrast between sunlit areas and shadowed tarmac.

• Physically Based Tone Mapping: The rendering pipeline now better preserves dynamic range across scenes, reducing clipping in bright skies, headlights, and specular reflections while preserving shadow and midtone details.
• Dynamic Diurnal Lighting: The lighting model dynamically computes solar intensity, color balance, and sky-driven illumination across full day-to-night transitions. Sunrise, midday, and sunset transitions flow more smoothly, and ambient illumination at night has been increased to improve track visibility.
• Environmental Foliage: Long-grass rendering has been reworked on sloped terrain to reduce visual artifacts when foliage sits partially or fully in shadow.
• Rain and Track Dynamics: Testers reported improved continuous water spray behavior behind vehicles in heavy rainfall at circuits like Michelin Raceway Road Atlanta, along with clearer development of drying racing lines.

Gameplay, Quality-of-Life, and Console Telemetry

Consoles & Peripherals

• Console UDP Telemetry: Players on PlayStation 5 and Xbox consoles can now access UDP telemetry toggles in settings (configuring frequency, host IP, and port) to broadcast live telemetry to mobile dashboard applications or external hardware displays.
• PlayStation 5 Stability: Fixed a software crash that occurred when drivers returned to the pit lane using the Join in Progress function in custom lobbies.
• Logitech TrueForce Recalibration (Hotfix 2.3.0.1): Addressed a severe input bug causing violent jolts through Logitech TrueForce wheels when touching track kerbs or surface seams. Additionally, 2.3.0.1 resolved an issue causing distorted "gravel stones" audio artifacts across specific audio devices.

ModHub Enhancements

• Dedicated Search Feature: Users can now filter and search directly for custom liveries and mod content.
• Lobby Dependency Checks: When attempting to join custom multiplayer lobbies featuring modded cars or tracks, ModHub identifies all missing items and offers direct one-click installation.
• Tracking Counters: Mod detail pages now list installed, update, and total download counts.

Career Mode and Multiplayer

• Multi-Class Championships: Career mode now supports custom multi-class racing schedules.
• Career Logic Fixes: Fixed soft-locks when purchasing cars or launching events, added safe default pricing for unpriced custom vehicles, corrected garage repair cost calculations after vehicle sales, and added night lighting to career podium scenes.
• Starting Grids & Pit Operations: Resolved a bug causing multiplayer cars to roll across starting grids before race start lights turned green. Drivers can now serve timed penalties by entering their pit box without queuing mechanical servicing.

Community Feedback and Known Issues

Despite widespread praise for the GT3 handling balance and improved night visibility, player reports across Steam forums and community channels highlight a few remaining pain points:

• Wheel Oscillations at High Speed: Following 2.3 and 2.3.0.1, players with direct drive wheelbases (such as Moza and Logitech Pro/RS50 units) reported center oscillations on high-speed straights in select GT3 cars (notably the 2024 Aston Martin Vantage). Community workarounds suggest matching wheelbase driver rotation angles strictly to 900 degrees and applying moderate wheel base damping or natural inertia.
• Triple Screen Crashes on PC: Multiple PC users running 1440p (2K) triple-screen configurations reported game crashes upon enabling triple-monitor mode. If the game crashes on startup, clearing the configuration files located in Documents\My Games\Project Motor Racing restores defaults.
• AI Inconsistencies: While update 2.3 adjusted AI top speeds and pit-lane merges at Nürburgring 24 Hours, community racers report that offline AI opponents can still engage in sudden, aggressive braking in flat-out sections (such as Northampton at Silverstone) during initial race laps.

Frequently Asked Questions

Is the Lamborghini Temerario free in Project Motor Racing?

Yes. The Lamborghini Temerario and the new Track Day class were added directly to the base game as part of the free 2.3 update and do not require purchasing a DLC pack.

Do custom vehicle setups created prior to update 2.3 still work?

According to Straight4 Studios, prior custom tuning setups remain compatible, though players may need to readjust tire pressures and aero balance due to the updated GT3, GT4, and LMDh physics.

How do I configure external dashboards on console using UDP telemetry?

Navigate to the game settings menu, locate the UDP Telemetry tab, enable the broadcast toggle, and configure your local network host IP address, port number, and desired update frequency to match your external dashboard app.