Myself and a few others have noticed inconsistencies when applying tunes to cars where the exact same tune behaves noticably differently when reapplied.
Has anyone else had this issue or am I going mad? Is this a known bug? Seeking feedback from ya’ll.
Edit: To clarify this is not the bug where a tune changes from one class to another.
I have run across setups that are listed as A/800 but when downloaded and applied become S1/802. Is that what you mean?
No, although I encounter this issue aswell.
To clarify, the issue is reapplying the exact same tune and the car performing differently.
So for example, I apply s1 class tune named “tune” by “tuner” to car “car”. I then change tune to something else. I then reapply s1 tune “tune” to car “car” and sometimes the performance/handling is totally different as if the tune wasn’t applied, yet it’s the tune currently applied.
This is an issue related to different rims sizes when reapplying stock rims via a tune. Has been in Forza for quite some time ( I think Horizon 3) and can be solved by applying the tune twice.
The issue anonyyymous is encountering is a different one. I had it as well but I wasn’t able to reproduce it and thus can’t make an informed guess about the reason.
It felt like tire width increase wasn’t recognized and the car being very unstable. But it could’ve been something else.
I’ve also had tunes where the rating randomly goes up by 1, so 800 becomes 801 etc., making the car a different class. Reloading the tune always fixes it. It happened in FH4 as well.
It doesn’t sound like that’s what you mean though.
The green, and red indicators keep changing all the time if you look at a car with a tune on it, and compare it with the same tune they don’t match up.
This sounds like the issue we’re having. I generally can over look bugs but not this if it is indeed a bug. This is ridiculous and anoying.
I had something very specific happen this week. I tuned my jaguar for the big cats championship and completed it and shared the tune, but when I later reapplied the tune, the suspension settings reset to stock before any adjustments for some reason. Noticed the handling was off when I drove and went to check the tuning. Had to adjust the settings again and save over the tune.
Happened far too many times than I can remember. My own Boneshaker tune A 800 when applied randomly becomes S1 801. When re-applied again, it shows A 800 correctly.
Hey Danke, thanks but I’m referring to another bug where the class for the tune remains the same but the tune doesn’t appear to get applied correctly and basically feels like some random tune.
I think I just reproduced this bug:
Note the class for this tune was S1 during each step. Go figure…
I’ve encountered the same issue quite a few times when increasing Difficulty from any lower level to Unbeatable. The car suddenly handles like stock and has a completely different feel than the tune that’s supposed to be applied. Changing to a lower difficulty level usually fixes it but not always. Really annoying.
I mentioned an issue with tunes feeling different when increasing the difficulty about a month or so ago. At the time I drove with Stability turned on, so someone (not sure who) said turn it off, which I did and it fixed the issue, or so I thought!
However moving forwards I knew the issue was occurring and something wasn’t right, so I decided best fix was to stay on Unbeatable, but this didn’t resolve the issue, as with doing rivals you try different tunes and modify your own constantly, and this creeped it’s ugly way back in, completely screws with your enjoyment and testing.
There is something seriously array with the physics simulation engine, along with assists, car controller, and ai controller layers, which funny enough coincides with the strange ai behaviour being witnessed at higher levels of difficulty. It can’t be just a coincidence, can it? Surely not?
I wonder if this is why Unbeatable is so hard, we are using the wrong tune?
I’m not sure if the bug I’m encountering is the same as the difficulty bug you mention. Most likely multiple bugs. In my case I swap tunes alot during rivals and don’t do other activities in between and this is when I’ve noticed these issues where the same tune believes entirely different. Note also I’m doing the same route.
Yep, I know what you mean, seen you mention quickly in the other thread and was going to mention it, but you know what it’s like on the rivals thread… just one more attempt 
not so much this week from me… suffering from food poisoning. Arrggh another story.
Anyways even though the events on how this seems to tigger are across different aspects of the game, it comes down to the same results:
Swap tune, revert to same tune different feeling and feedback experienced.
Changing AI difficulty - same tune feels like it’s reverted to stock.
AI behaviour might be off topic but it uses the same physics engine (hence my question about coincidence, it can’t be, surely?!?)
It may be effecting people differently, but still points back to the same block of code/functions - Physics Engine?
I’ll add another situation to the mix just to muddy it even more.
Last night i was doing rivals in Elise and dropped out for a while to do some weeklies, obviously changing cars. Weeklies done i went back into rivals and swapped back into the exact same Elise i’d used before and it was off; 1-2 seconds a lap off,brakes and steering both noticeably underperforming on the tarmac bits.It was late so, i just shut down and left it without trying to restart or reload to see if i could rectify it.
I think that the tyres are programmed to warm up like real tyres, but not for the Ai.
My main concern with this bug is it’s not obvious to know whether you’re being impacted by it, but also it can turn players off the game if they think the issue is related to the game physics. I bet so many people have tuned a car or used a tune and then encountered this issue and ultimately thought either the car sucks or the new physics suck.
Good to know, thanks for the info.
Being truthful if I wasn’t a fan or dedicated to the franchise, I’d have been one of them. The last month or so since this started to annoy me, has been driving me insane. It’s so obvious when it happens, but you have to load into race, event etc before you notice it.
Thankfully I know what to do now prior to any race, rivals etc but it is so many additional steps that should have been unnecessary, and even then might still not fix it first time around… so much time wasted.