Paint Kit
Inside Sim Racing sponsor images have been updated.
Netcode
The default initial maximum size of a network datagram the Sim generates has been adjusted. At this new default size, maximal packets using the “512k or faster” bandwidth selection will require only one datagram to be sent in full. In the “core.ini” file, the “[Communications] default_datagram_max_size” setting has been renamed “default_dgram_max_size” to ensure this new default is used.
Dynamic probing of the maximum size datagram your connection will support has been disabled. With this probing disabled, the number of datagrams needed to send a maximal “1Mbit/sec or faster” packet increases from 2 to 3. In the “core.ini” file, the “[Communications] enable_path_mtu_discovery” setting has been renamed to “enable_pmtu_discovery” to ensure this new default is used.
DirectX 9
Fixed an issue where windshield reflections appeared dimmer than in DirectX 11.
DirectX 11
Fixed a crash bug that happened when exiting the simulator with certain graphics settings, such as class 1 settings with Render Dynamic Tires disabled.
Fixed an issue where skies were often not oriented correctly. For instance, the sun was often located at some random and incorrect position.
Fixed the odd bluish shadow patches that could appear on road surfaces and curbs with low sun angles such as occur during the morning and afternoon. The issue was noticed at Lime Rock Park and Virginia International Raceway.
Fixed an issue where black lines would sometimes appear when using “High” shader level.
The filter that removes resolutions smaller than the desktop dimensions in the Autoconfig application has been removed.
The simulator now attempts to keep activation, and not minimize, when losing window activation, unless an Alt+Tab function was recently processed. This may help prevent “pop-up windows” and notifications from minimizing the simulator.
PopcornFX
Opponent vehicles will now emit dust particles correctly.
Dynamic Tire Debris Accumulation
Fixed an issue where tires would appear black when the Particle Detail option was set to the “Low” setting.
This system will be disabled when the shader level is set to Medium or lower.
EasyAntiCheat
Should a Package Error 73 occur the specific EasyAntiCheat message that caused the error will be appended to the sim_launch.txt log file in your My Documents\iRacing\logs directory, for future reference.
Video Capture
Video Capture will now be defaulted to disabled.
Video Capture can now be enabled and disabled via a Settings option.
Users are now able to select “Fullscreen” when capturing video.
A new video capture library has been added to fix an issue with DX11 and XSplit.
CARS

Audi R8 LMS GT3
2016 S2 GT3 BOP Change: Aero drag has been slightly reduced.
BMW Z4 GT3
2016 S2 GT3 BOP Change: Minimum weight has been increased by 5kg.
The current baseline setup will no longer fail Tech.
Dallara DW12
Illuminated Lumirank digits will now turn green when entering pit road.
Ford GT
This vehicle is now capable of flashing its headlights.
Ford GT GT3
Fixed a bug where the traction control switch was unable to turn off and the slip limits were incorrectly defined, compromising system function.
Formula Renault 2.0
Setups have been updated.
Fixed an issue with the animation of the suspension.
Dampers have been adjusted; dampers for all setups prior to this build will be set to 0. Members who already own the car should either adjust their damper settings to feel/speed or restart setups based on these new iRacing baselines included in this build.
Changelog edit copied from Bsimracing
Brake Balance can now be adjusted using the in-car Black Box.
The level-of-detail distance for the suspension system has been adjusted.
Opponent cars should now bounce less when they enter the world.
Controls option for fuel mixture settings has been removed.
Legends Ford ’34 Coupe
Season setups have been added for Five Flags Speedway, South Boston Speedway, and Stafford Motor Speedway.
Mazda MX-5 Cup
Setups have been updated.
McLaren MP4-12C GT3
2016 S2 GT3 BOP Change: Minimum weight has been increased by 10kg.
McLaren MP4-30
Efficiency of P2P/OT of the Energy Recovery System (ERS) has been reduced significantly.
Aero drag has been reduced when the Drag Reduction System (DRS) is engaged to improve the ability to overtake.
Mercedes-AMG GT3
2016 S2 GT3 BOP Change: Aero drag has been slightly reduced.
Internal windshield of the external model will no longer appear green.
Fixed a bug where the traction control switch was unable to turn off.
Fixed some level-of-detail textures.
NASCAR Camping World Chevrolet Silverado
Season setups have been updated for Richmond International Raceway.
NASCAR Camping World Toyota Tundra
Season setups have been updated for Richmond International Raceway.
NASCAR Sprint Cup Chevrolet Impala COT circa 2013
The restrictor plate engine package has been removed.
A 3.45 rear gear is now allowed at superspeedway tracks.
Tire grip has been increased at superspeedway tracks.
Tires now absorb heat slightly slower at superspeedway tracks.
Shock and spring limits have been removed at superspeedway tracks.
Ruf RT 12R C-Spec
Illuminated Lumirank digits have been removed while in cockpit mode.
Ruf RT 12R Track
Illuminated Lumirank digits have been removed while in cockpit mode.
SCCA Spec Racer Ford
Setups have been updated.
Tracks

Autodromo Jose Carlos Pace
Terrain art updates.
Autodromo Nazionale Monza
Terrain art updates.
Barber Motorsports Park
Terrain art updates.
Brands Hatch Circuit
Terrain art updates.
Canadian Tire Motorsports Park
Terrain art update.
Circuit of the Americas
Terrain art updates.
Circuit Gilles Villeneuve
Terrain art updates.
Donington Park Racing Circuit
Terrain art updates.
Lime Rock Park
Terrain art updates.
Mazda Raceway Laguna Seca
Terrain art updates.
Mid-Ohio Sports Car Course
Terrain art updates.
Mount Panorama Circuit
Terrain art updates.
Nürburgring
Terrain art updates.
Okayama International Circuit
Terrain art updates.
Oran Park Raceway
Fixed a pitstalls and starting grid placement issue in the North B config.
Terrain art updates.
Oulton Park Circuit
Terrain art updates.
Phillip Island Circuit
Terrain art updates.
Road Atlanta
Terrain art updates.
Sebring International Raceway
Pesky cones have been removed.
South Boston Speedway
Terrain art updates.
Southern National Motorsports Park
Jersey barriers have been updated.