Grip Bug Thread v2

Discussion in 'Gran Turismo Sport' started by GT_Alex74, Jan 13, 2018.

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  1. Spurgy 777

    Spurgy 777

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    I won't be doing any more testing as I don't feel there is a need to, the main aim of this thread was to get as much information as we could to PD in the hope that the bug was fixed as quickly as possible. Now that they are aware of it and have received all the information we have there is nothing more we can do to help. Also everything we knew about the bug was posted in this thread, mostly because there was no reason to hide any test results if they were useful in some way, but also so it was easier for PD to read what we found out.
    I'm studying to be an engineer, so I'm classing a bit of problem solving and running tests/experiments as revision. (definitely not an excuse to go on my PS4 instead of actually revising) :lol:

    Put the tin foil hat away. :lol:
     
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  2. GT_Alex74

    GT_Alex74

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    Yeah, we already had confirmation they knew about this topic, now we have confirmation PD are actually working on it, so our work there is done. I think we can reasonnably expect a team of pro developpers with every tool they need at hand to be able to do any further testings if they need to.
     
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  3. Tidgney

    Tidgney Premium

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    Erm 1 thing I've spotted in RA's replay is that sometimes his brake goes from 0 to 100% even though he began braking 5/10 metres earlier than the indicator states. No idea whether that's relevant. Also still editing video, hopefully will be out about 11pm GMT depending on whether my mega 1mb upload connection wants to go warp speed to 1.4 :).

    Edit: It's not brake assist happening is it? I'm at another corner and it's like it starts braking before RA even attempts to brake (Not insulting driving here).
     
    Last edited: Jan 18, 2018
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  4. GTPorsche

    GTPorsche

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    Sometimes there is a slight delay in what happens on track and what is shown on the HUD in a replay.
     
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  5. GT_Alex74

    GT_Alex74

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    More than often I'd say.
     
  6. Tidgney

    Tidgney Premium

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    I think you're right I was just focusing more on RA's camera for obvious reasons!

    Video is here:



    Please note I've added in the description that any flaming comments towards RA will be removed immediately from that video. Some pictures bit pixelated no chance to fix those in terms of time. Also wasn't sure whether to keep public or unlisted so made it public as it's in this forum which is public but if you want me to change that let me know.

    Some interesting things I saw at least which was varying apex speeds, and also as has been mentioned braking zones.

    Hope this helps this thread at least.
     
  7. RA1784

    RA1784

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    Yeah as gt_alex said, the work is done for us. Thank you all for helping. Well done. I hope to see you guys on track one day.

    @Tidgney i think the engine sound is more accurate then the HUD.
     
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  8. lightningd

    lightningd

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    You're the best player
     
  9. nuu1212

    nuu1212

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    Good effort, but rather hard to follow what is going on.
    Only a replay with one bugged car directly chasing a standard one would really shed light on the issue.
     
  10. Tidgney

    Tidgney Premium

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    I have no idea how I could merge 2 clips easily into 1 clip and show both cars, I'd need transparency or a green screen, and also to cut out just the car (Which I imagine is incredible difficult to do) I guess but that would be even harder to follow I think at least with my editing skills as I'm not the greatest editor and just use the tools I know and occasionally learn new ones, had to choose slow-mo over that ghosting I'm afraid.
     
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  11. alenx

    alenx

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    Hello everyone, this is my first post.

    Regarding this issue, Is there any way to test if your game is bugged?
     
  12. nuu1212

    nuu1212

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    You cannot merge them, and I was not suggesting that.
    Just saying that a real race between 2 cars would show things much more clearly. You did not have such a replay, however.
     
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  13. Iceman

    Iceman Staff Emeritus

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    I think the video very clearly shows the the major advantage the bug gives in reduced braking distance and increased grip out of corners. The corners where the non-bugged driver carries a higher apex speed, then loses that advantage (doubly so) by the corner exit are especially telling. In any case, I don't think it would take an experienced person at PD more than a glance at some of the bugged top relays to know without a doubt that something is wrong.
     
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  14. Tidgney

    Tidgney Premium

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    Ahh ok that makes sense, that would be good actually :).
     
  15. NommyNom

    NommyNom

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    Experienced another driver this morning with the 4C road car at dragon trail with the potential to have the bug, impossible lines and sloppy but still managing a second or two faster per lap. I tried mimicking the lines and brake points in practice and it was a disaster, no way.

    Thanks for uploading the video, tidgney!
     
  16. MikeV27

    MikeV27

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    Thank you for all the work you guys put into this. :cheers:

    Hopefully this gets fixed quickly.
     
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  17. 1MSC

    1MSC

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    So I was watching some replays from todays B race quali in order to improve my time. It seems like im losing time in the first chicane (marina) and then the downhill S-es. some people go full throttle there, is it possible or is it this bug you are discussing? I dont know, probably im just slow tough:gtpflag:
     
  18. Spurgy 777

    Spurgy 777

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    The laps are fine, I don't see anyone going full throttle in the corners you mentioned either so I wouldn't try it. :lol:
     
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  19. XAroGantzX

    XAroGantzX

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    Make a second account on your ps4 and see if you get similar times with both, if one is obviously faster then there is a chance it's bugged, obviously it'll need to be the same car, track and setup.
     
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  20. dabz343

    dabz343

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    Polished editing and insightful analysis. I hope PD will resolve this issue with the same level of professionalism.

    Additionally, I encourage PD to take this thread as an example of how they need to be vigilant in maintaing stewardship of GTS. It shouldn't take weeks of personal investigation to raise issues that degrade the integrity of GTS.
     
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  21. UGA95

    UGA95

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    Let us dumb gamers know where you place at the Rolex 24 in Daytona next weekend, professional race car driver.
     
  22. nuu1212

    nuu1212

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    Is this thread about grip or rip?
     
  23. OnyxMoneytron

    OnyxMoneytron Premium

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    Late reply but I was told the grip bug doesn’t affect Campaign Mode by one of the drivers with a bugged account. Probably not new info but it's not the best test. You’d need to get in Sport Mode and set a lap.
     
  24. Tou2istTrophy

    Tou2istTrophy

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    When I asked someone in a YouTube stream who has the bug, someone replied that it affects Sport mode and GT League. I don't think it affects campaign. Someone with the bug would have to confirm this though.
     
  25. BigDawg_1281

    BigDawg_1281 Premium

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    I didn't know that. I did run some laps in sport mode though. Ran a few races too. Times were nearly identical
     
  26. OnyxMoneytron

    OnyxMoneytron Premium

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    I PM’d you my source. It’s on a public platform but still...
     
  27. The359

    The359

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    Ran into an account tonight on the Interlagos Gr.3 race. Never seen the name before, B rated driver. He started at the front, fell back at the start, but eventually caught me and passed me. I'm in the Top 10 times now and I noticed he was performing way better.

    Checking his profile, account is a mere 3 days old. Literally only logged on 3 days. No campaign mode completion, only 681 miles completed in game. And already in the Top 10.

    Could be an experienced user with a new account, but I just found his performance to be oddly quick for an endurance race.
     
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  28. Spurgy 777

    Spurgy 777

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    More than likely is just a fast guy on a new account, especially if it has a team tag, but if you do have a replay you want me to look at or an account name, send me a PM.
     
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  29. The359

    The359

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    I raced him a bit later and he spoke in Japanese, so I presume it's a Japanese player with a new US account.
     
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  30. dabz343

    dabz343

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    I also came across a driver today that seems to exhibit unreal traction. Gr4 Audi TT with RH, able to run Dragontail sub 1:45. Although the lap time is achievable under legit physics, I would like a second opinion from those that have examined this grip bug thoroughly.

    Since this thread has been established, I have taken some time off from Sport Mode to explore the private lobbies and have noticed more than a few suspect drivers. I've kept a log of number of players met vs suspect accounts and from my preliminary data, it suggests that ~ 1 out of 100 drivers exhibit strange traction characteristics. Current data pool is about 1000 drivers and counting, thus 10 suspect accounts.
     
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