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Project Motor Racing
Steam News 4 May 202616d ago

Project Motor Racing — Update 2.0.0.3

Update 2.0.0.3 is now live for Project Motor Racing, bringing a wide range of improvements focused on performance, stability, and overall usability. Headlining this update is the introduction of Multi-Draw Indirect (MDI…

Update log

Full Project Motor Racing update

The complete published notes, normalized for clean reading and source attribution.

Extracted changes

0 fixes5 additions27 changes0 removals
  • Performance
  • Gameplay
  • Workshop
  • Security
changedUpdate 2.0.0.3 is now live for Project Motor Racing, bringing a wide range of improvements focused on performance, stability, and overall usability.
addedHeadlining this update is the introduction of Multi-Draw Indirect (MDI) on the PC platform, a significant rendering upgrade that improves how the engine handles large complex scenes. Alongside that comes further expansion of the throttle response model, a new relative timings function for the Digidash, and a reworked handling for the Porsche 911 Carrera Cup (964).
addedRelative Timings LeaderboardExpanding on the existing Digidash tool, a new relative timings function has been added, giving players more detailed information race position and gaps to opponents.
changedImplementation of MDIMulti-Draw Indirect (MDI) is a major step forward in how the engine renders large, complex scenes. By moving draw call generation and visibility decisions onto the GPU, CPU overhead has been significantly reduced, allowing the renderer to scale more efficiently with scene complexity.
changedImplementation of MDIThis enables the game to handle far more objects on screen while improving stability and overall CPU performance.
changedImplementation of MDIAlongside this, culling, batching, and render pass organisation have been refined to ensure only the work necessary for each frame is executed. The result is a more consistent frame rate, better use of modern hardware, and a stronger technical foundation for future multi-view features such as VR and triple-screen support.

Update 2.0.0.3 is now live for Project Motor Racing, bringing a wide range of improvements focused on performance, stability, and overall usability.

Headlining this update is the introduction of Multi-Draw Indirect (MDI) on the PC platform, a significant rendering upgrade that improves how the engine handles large complex scenes. Alongside that comes further expansion of the throttle response model, a new relative timings function for the Digidash, and a reworked handling for the Porsche 911 Carrera Cup (964).

Relative Timings Leaderboard

Expanding on the existing Digidash tool, a new relative timings function has been added, giving players more detailed information race position and gaps to opponents.

Implementation of MDI

Multi-Draw Indirect (MDI) is a major step forward in how the engine renders large, complex scenes. By moving draw call generation and visibility decisions onto the GPU, CPU overhead has been significantly reduced, allowing the renderer to scale more efficiently with scene complexity.

This enables the game to handle far more objects on screen while improving stability and overall CPU performance.

Alongside this, culling, batching, and render pass organisation have been refined to ensure only the work necessary for each frame is executed. The result is a more consistent frame rate, better use of modern hardware, and a stronger technical foundation for future multi-view features such as VR and triple-screen support.

Expanding Anti-cheat System

First introduced in Update 2.0, the anti-cheat system has already been tested in Ranked Online. With Update 2.0.0.3, it has now been expanded into Factory Driver Challenge, Endurance Hall, and the Ranked Online License Test to help ensure fair and consistent leaderboard results.

Throttle Response

Building on the foundation introduced in Update 2.0, and later expanded in Update 2.0.0.2, more cars now benefit from the updated throttle response model.

You can learn more about how this system works in our blog: Deep Dive: Throttle Response Model

Continue reading for the full patch notes.

Physics & Handling – Per Class

  • The throttle response improvements introduced in previous updates have now been extended into more classes.

  • Improved modelling and performance for cars equipped with a turbo.

  • Below is a detailed list of changes made to physics and handling-related systems.

964 Trophy

  • Upgraded AI opponents' behaviour for this class.

  • Reworked handling model.

  • Improved tyre model.

992 Trophy

  • Upgraded AI opponents' behaviour for this class.

  • Improved AI opponents’ physics for this class.

Group C

  • Improved modelling and performance for cars equipped with a turbo.

  • Tyre model updated to latest iteration as seen in Update 2.0

  • Improved throttle response.

GT

  • Upgraded AI opponents' behaviour for this class.

  • Improved AI opponents’ physics for this class.

  • Improved modelling and performance for cars equipped with a turbo.

  • Tyre model updated to latest iteration as seen in Update 2.0.

  • Improved throttle response.

GT1

  • Improved modelling and performance for cars equipped with a turbo.

  • Tyre model updated to latest iteration as seen in Update 2.0.

  • Improved throttle response.

GT3

  • Upgraded AI opponents' behaviour for this class.

  • Improved AI opponents’ physics for this class.

  • Improved ‘cold falloff’ tyre grip as per player feedback.

  • Improved throttle response.

GT4

  • Upgraded AI opponents' behaviour for this class.

  • Improved AI opponents’ physics for this class.

  • Improved throttle response.

GTE

  • Upgraded AI opponents' behaviour for this class.

  • Improved AI opponents’ physics for this class.

LMDh

  • Upgraded AI opponents' behaviour for this class.

  • Improved AI opponents’ physics for this class.

LMP

  • Improved modelling and performance for cars equipped with a turbo.

  • Tyre model updated to latest iteration as

Source

Steam News / 4 May 2026

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