0.3.0-preview581

• Version ID: 4116
• Size: 138.60 MB
• Published: 2026-09-02

Changelog

New features, options and improvements

• Crucial:

  • Suspension damage fixed;
  • A bug with rear Cosmic suspension not getting damage applied, or damage not getting reset when teleporting to pits, fixed;
  • Original physics malfunctioning on some tracks with double-sided surfaces fixed;
  • AC window handling reworked a bit: now properly DPI-aware across monitors with different scaling, fixing a bunch of issues;

• FFB:

  • Default damping frames skip lowered from 5 to 3;
  • New Adaptive FFB performance tweak in FFB tweaks, now with an option to adjust frame skipping live, disabled by default;
  • Custom FFB initialization experiment has been renamed to Custom FFB handling, now includes custom FFB application (still disabled by default);
  • Adaptive hard collisions fixed, now simulate actual rigid internal structure instead of magically making outer surface rigid, applies to rim-ground collisions as well;
  • Xbox gamepad impulse triggers updated to be safer and more stable;
  • A new option for Gamepad FX boosting rumble rate from 30 to 60 Hz (disabled by default);

• Performance-related:

  • A few fixes that should improve performance regressions on some PCs;
  • Hyperthreading fix option reworked, now leaves more cores for physics workers, and limits number of physics workers by default;
  • First 400 late physics frames log some internal measurements to help diagnose issues;
  • ODE step multithreading kicks in only if solver takes a while to do its job, to prevent wasting time and resources on spinning up those workers for them to do the minuscule amount of work;

• DLSS:

  • Option to enable Neural Rendering (needs the library for it to work, you might have to wait until official release to get it);
  • CSP checks custom DLSS DLLs for integrity unless disabled, to keep users safe;

• Audio:

  • The issue with audio clicks should be improved;
  • Cars limit is set similar to the original implementation;
  • New car audio implementation also disables distant audio if it’s estimated to be out-of-range, the same as the original;
  • Added an upper limit for simultaneous crash audio events, with more efficient use of the pool;
  • Out-of-range skid, surface and collision audio events are also no longer playing;

• A few things to help with memory consumption (disabled by default):

  • Option to use DDS compression for MIPs generated for badly saved textures;
  • Option to limit texture resolution;
  • Option to track memory consumption by content (shown in Render Stats);
  • Option to commit replay memory gradually;

• Render Stats app:

  • Physics thread priority is shown in the tooltip;
  • The app tracks time it takes to submit FFB (in physics tooltip and Other threads section);
  • Performance reports include some details about physics computations;

• CSP previews:

  • Tonemapping, ambient and environment illumination now match the ones configured in Content Manager;
  • Reflections, shadows in reflections, ground switches, DOF and HDR switch are respected;
  • Proper mirrored bloom shader;
  • The implementation is moved away from default Weather FX style;
  • Steering is applied smoothly, stopping some suspensions from exploding;
  • An issue with some cars getting stuck fixed;
  • Smaller fixes;
  • A new option in Small Tweaks restoring old broken look from a few versions ago, for old presets tuned for CSP to still work;

• P2P 1v1 and other altonline modes:

  • Sound from other cars in P2P 1v1 mode, other altonline modes, or cars initially loaded as nul, fixed;
  • P2P 1v1 and altonline: flags in car state are applied correctly;

• Miscellaneous:

  • Repair wheel joints experiment is redone to instead limit possible wheel movement (applies only to DWB and strut);
  • CSP syncs server features for extended servers during initialization;
  • If new smoke is disabled, old smoke does simple splashes;
  • New option to follow desktop scale, or keep resolution the same across monitors with different scale;
  • Pace frames better option improved, should work more reliably;
  • New [EXTRA_RULES] FORCE_NEW_PARTICLES=1 parameter for online servers;
  • Failures to check files during connection online are reported as such, not as a generic handshake failure;
  • Checksum failures are shown as errors, listing possibly mismatched files;
  • FFmpeg plugin no longer blocks loading at the very start, instead, it lets Assetto Corsa load, and then blocks things at the end;
  • Detailed crash reports are disabled by default again, to help with reports failing to be generated;
  • Better handling of DirectX initialization failures;
  • New One-sided boxes for car colliders experiment, disabled by default;
  • Options to show tips and car preview during loading, disabled by default;
  • Options for those new ODE optimizations are visible now, just in case;
  • Defaults for web requests adjusted (HTTP3 and TCP Fast Open are disabled by default now);
  • Some of IMGUI internal variables now update even with UI hidden;
  • With [RACE] __START_IMMEDIATELY=1 in race.ini, race starts immediately (CM update is coming in a bit);

Fixes

• Animated wings are working in replays;
• Optional car parts fixed, correcting wings and other parts missing in replays;
• Replays are opening in Wine again (recent regression);
• ODE for batch raycasting fixed;
• Error message for a missing track fixed;
• New main menu: slipstream display fixed (both slider offline and CSP tweaks display online);
• FREQUENT_TRACK_CHANGES feature is working properly;
• Force enable free camera is functional (previously, only worked in VR);
• Rain drops are no longer drawn over splashes when spectating;
• Disabling post-processing, but leaving MSAA on no longer messes up custom modes, particles and such;
• Occasional crashes caused by wheels-vs-cars collisions fixed;
• Car AABB compute from lowest LOD fixed, resolving an issue with CSP previews and such for some cars;
• Occasional crashes related to extra lights created and used at some specific points of a frame fixed;
• Swapping in a car which uses make-…:: no longer leads to a crash;
• Flashlight light source no longer gets left behind;
• Small improvements for free camera rotating with the mouse;
• Crash reports generation should be more reliable, dialogs won’t disappear a few seconds after being opened;
• Occasional crashes in some configurations fixed;
• ReflectionsFX Debug app no longer messes up IBL with non-LCS weather styles;

Lua:

• ac.makeScreenshot(): new parameters iterations and onCameraStep;
• ui.addSettings(): pass vec2() as size for a simple fixed size window;
• New require('shared/sim/cspdebug').hideCarInReplay() function for scripts with I/O access;
• Small Lua docs fixes;