1. Do you need support for Assetto Corsa Competizione? Please use the proper forum below and ALWAYS zip and attach the WHOLE "Logs" folder in your c:\users\*youruser*\AppData\Local\AC2\Saved. The "AppData" folder is hidden by default, check "Hidden items" in your Windows view properties. If you report a crash, ALWAYS zip and attach the WHOLE "Crashes" folder in the same directory.
  2. FOR ASSETTO CORSA COMPETIZIONE: If you report issues with saved games, please always zip and attach your entire User/Documents/Assetto Corsa Competizione/Savegame folder!
  3. If your game executable is missing, please add your entire Steam directory to the exceptions in your antivirus software, then run a Steam integrity check or reinstall the game altogether.

V1.3 what's the buzz

Discussion in 'Chit Chat Room' started by Aristotelis, Oct 8, 2015.

  1. Aristotelis

    Aristotelis Will it drift? Staff Member KS Dev Team

    So the imminent version 1.3 (and Dream Pack 2) brings a whole new bunch of improvements, features and novelties.
    Here's some previews regarding the driving (I wanted to write "warnings" but it sounded a bit too harsh :p )

    64bit - 32bit.
    Nothing changes in terms of driving and physics between the two. 64bits though permits addressing bigger chunks of memory and can do stuff like saving bigger replays. I do not know if this is already enabled by Stefano, but if not, will be in the future. Certainly 64bit is the way forward, so start updating too...

    - New ABS system which now supports 1,2,3,4 channels. Cars should stop better now. (obviously realistic distances)
    - Active differentials also at the rear wheel drive cars. I'm not talking EDLs supporting mecchanical diffs but actual active differentials. They can do some great tricks... try the M4, Ferrari 458, Ferrari LaFerrari for some amazing results.
    - EDL differentials now active also at the front of AWD active systems. Yes we managed to eliminate some (not all) understeer from the Por... sorry RUF AWD. The Nissan GT-R pulls some amazing tricks too.
    - Modified Front splitter height sensitivity for some cars will make some famous turns not so easy to do.
    - Added wheel offset simulation in suspension so that you can simulate more easily and accurately the correct suspension scrub. Scrub value is also available in the dev app "suspensions"

    V5 Tyre model:
    Our tyre model evolves with each release and this is a big step forward! We now have completely reworked load sensitivity equations, new over the peak curve, different flat-spotting based also on load, modified and corrected rolling resistance equations, new heating values and simulation of both surface and core temperatures with speed (from air speed) sensible cool down and more. All of that in the core system

    Because of all those changes in the core system, we have put a massive effort to completely rework all the tyres for all the cars. That's more than 130 files each of one with at least 2 compounds, usually 3, sometimes 5... the struggle was (is) real.

    As such, the bad news is that some of the cars are still on the V4 tyre model (which is still compatible so your mods also are not broken). The good news is that there are just 7 cars that are still on the V4 model, namely:
    Ferrari 312T, Lamborghini Miura SV, Lotus 49, Lotus 98T, Lotus EXOS 125 (and S1), Shelby Cobra 427.
    As you can see, they are all either extreme single seaters or vintage tyres. We need some studying to do for them and couldn't make it in time. Expect an update soon™

    All the other cars are on the brand new V5 tyre model!

    What to expect in terms of driving?
    Nothing and everything.
    As usual we have a pretty decent idea on what a tyre should do and that hasn't changed, so we don't believe you'll feel something completely new. More of a global improvement of weak points of the old model. Nevertheless my advice is: Forget everything. Forget your laptimes, forget your setups, forget your FFB settings, actually set everything to 100% gain as we changed how the FFB handles for all cars too.
    Just drive, from scratch, without any muscle memory.

    A few notes.
    - Heat your tyres slowly. It will need 1 to 2 laps to bring the tyres to proper temperature both surface and internally in the core. The surface will keep going up and down but the core will stabilise. Then start to push. Otherwise use the tyre blankets
    - What was the core temperature on the apps is now surface. Don't go crazy on the surface temperature. It is VERY variable now. It will go up and down in terms of mere seconds! What you need is a proper temp range on turn in, apex, exit. Ignore what it does at high speed on the straights, that's how it works. (look at some F1 heat cameras videos on youtube to understand the effect).
    - Cars are even more sensitive to setup now. One click at a time.
    - Did you spun out? It happens. But be VERY careful when you rejoin. It really takes nothing to overheat the tyres while doing burnouts to get back on track. The next turn might be fatal! Take it easy for at least 2-3 turns to cool the tyres down.

    And a mea culpa. The new heat tyre model is extremely complicated. We should have made a proper app or proper messages to warn you when the tyres are cold, overheated, good or bad condition. We didn't make it. We apologize, we will try to do it... err... soon™. Please be kind and have patience, it's complicated for us too and days have only 32 hours.

    Last edited: Oct 8, 2015

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  3. Ischemica

    Ischemica Hardcore Simmer

    Thanks for all your work Aris! and taking the time to describe the improvements:):):)
    vilivili, Turk, luchian and 1 other person like this.
  4. Horus

    Horus Alien

    So what have you been doing for the past three months. Gezzz, anyone would think you were actually busy! :p :D

    edit: I have reread the post and I have to say I am slightly disappointed. There is not one word of an update to the placebo effect! Has this been dropped from the update cycle?
  5. @Aristotelis FTW!!! thanks for calming down the masses!
  6. GTHQ_koop

    GTHQ_koop Hardcore Simmer

    Thank you..!! Congrats on another milestone.
  7. A. Gamberini

    A. Gamberini Racer

    Thanks kunos.!!
    Keep pushing
  8. Epocx

    Epocx Alien

    Thats great news, nearly all cars v5!!!! Thanks!!!
    vilivili, Dominic28 and Dookie like this.
  9. Brownninja97

    Brownninja97 Alien

    stop trying to kill Aris.!!!
  10. Mr.Mugel

    Mr.Mugel Alien

    Really looking forward to this! Thanks for all the hard work @Kunos!
  11. Znam Neznam

    Znam Neznam Hardcore Simmer

    Aris would you recommend clean install of AC for this 1.3 version?
  12. pmc

    pmc Hardcore Simmer

    Sounds awesome, thanks for all the hard work guys
    Yatzeck likes this.
  13. ears1991

    ears1991 Alien

    the best devs ever :)
  14. Great to hear/see all those changes.

    Can't wait to see how it works on track :)
  15. Leemstradamus

    Leemstradamus Hardcore Simmer

    excellent work as usual! Can't wait to have it unleashed on my wheel!
  16. Ales Nocar

    Ales Nocar Hardcore Simmer

    I love your posts about technical stuff Aris.
    baloche and Kristaps like this.
  17. This looks good! :)
  18. kofotsjanne

    kofotsjanne Alien

    Thanks for such a easy explanation that even I could understand and not just a lot of gibberish!
    ChokDK likes this.
  19. Aristotelis

    Aristotelis Will it drift? Staff Member KS Dev Team

    nah not really. If you ever have problems with AC, then just rename the documents/assetto corsa folder and relaunch and reconfigure. It should fix any gremlins.
  20. nonnex

    nonnex Alien

    Cooool! Me like all I have read.

    PS: But... pls... Do it.. you know.. the button.
    Press it. :)
    irfan.pratama, D1visor and Horus like this.
  21. A question aris does this build support hyperthreaded cpus?

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