Wow, so much nonsense to go through.
For the sake of humoring you I will give it a go, but simply put,
that's not how cars work. All applying the throttle whilst you brake does is push the car wide and make it harder to slow down. The only time would would ever use the throttle and brake at the same time is heel and toe which is intended to rev match as you downshift, but the game already does this for you. Plus it doesn't explain why the time you gain isn't due to using the throttle and the brake at the same time.
@Tidgney said he might do a side by side comparison for me to really see where exactly you're gaining, but looking at it none of the most obvious gains in time are where you're using the throttle and brake, here's a break down for you.
T2 - You're on full throttle over a second earlier and a good few car lengths over AUGH yet somehow use way less track on exit.
T4 - Again full throttle way earlier and 8mph up at the apex, granted to take a slightly better line but nowhere near go enough to be an explanation.
T7 - On the brakes much later that AUGH, by about a car length or two yet pull up in the same distance, how is that physically possible? And then again on exit you're on full throttle much much earlier.
T10 - Here you're not only full throttle quite a bit earlier than AUGH but you're sliding the car at the same time, so somehow you found better traction despite having lost the rear of the car?
What all these examples seem to have in common is that none of them have anything to do with you applying the throttle and the brake and all your gained time is through having insane levels of traction on exit, something you have in common with all the other weird laps I've been seeing. The only ways of getting increased traction out of corners that I know of is 1) a better line or 2) increased levels of grip, and in several of these cases you were either taking the same line or a worse one.
Trying to shrug it off as if we're just sore losers who can't accept someone is faster than us isn't going to work either I'm afraid. I've been playing GT for years now, with lots of people driving faster than me and doing lap times I could never do yet I've never questioned a legitimate looking lap. Your lap, and the others I have pointed out are so far from looking remotely legitimate that I would bet everything I had that there is something seriously wrong with your game, whether intentional or not I have no idea, that fact you're being so defensive and acting as if there is nothing strange about being so fast with such a rubbish looking lap makes one possibility more likely than another.
This is complete nonsense and I would hazard a guess that you know it is. CSA does not gain you seconds per lap, and makes absolutely no difference to an FF car, how could you possibly think it would? CSA deals with oversteer something FF cars are seriously lacking. It has it's uses on some cars and car at best gain you a few tenths, I've used it myself a few times and I don't magically become nearly a second a lap faster. If it's really worth all that time go ahead an prove it, should be easier for you to top the leaderboards if it does, but as the quick people who use it aren't miles ahead of everyone else, and the vast majority of the time the fastest lap isn't using it, I'm fairly certain that it doesn't make a huge difference.
Plus as RA said he wasn't using it anyway, and this is the one car out of the examples I've posted where it be useful.
Yes, I'm sure they haven't fixed an obvious bug in the physics in 14 years.
I very much doubt that you could get anywhere near some of the times that the 4 guys I mentioned have been doing, biggest advantage I've seen is 3 seconds faster than everyone worldwide at Kyoto in the Gr.4 Scirocco.
This sums up our findings nicely, we've had quite a few of the some of the best people in the sim racing world look into this and monitor it for over a month now, we've tried every in game option to try and explain these laps and unsurprisingly none of them worked.
The only explanation I can think of and the mostly likely one IMO is that there is something seriously wrong with the games of the people doing these laps, and it's the same conclusion that a lot of some of the best sim drivers in world have come to as well, simply just looking at the lap it's glaringly obvious that something is wrong.
It's not tyres, RSS is too slow to explain these laps.
It's been done using more than just the Megane, but doesn't necessarily mean it's not car specific.
I don't think you entirely grasp the work that has been put in looking at these laps, all of this has already been done. The first weird looking laps were being done pretty much since release at the beginning of November and we've analysed the speeds and where exactly they are gaining. Initially it was just one person and we have zero evidence for how any of these laps are being done so we didn't talk about it, but as more of these laps pop up being done by different people it's slowly becoming an issue.
The laps we've looked at they have been capable of taking corners 5mph faster than everyone else and getting similar advantages on the exit of corners all while using less track than everyone else, as well as being able to brake far later than is physically possible, all signs of increased grip levels. Weirdly they also seem to have the ability to lose this advantage in speed (after having gained the time they need) within a couple 100ft, bringing their speed down to match what they should be doing had they been driving like everyone else. What is weird about this is that they do it without lifting off the throttle and the only way I can think of doing that is by decreasing their power on the go and somehow knowing exactly when they are at the speed they should be doing. Now I thought this could be done using the 1-6 power change thing but I pretty sure that's only an option when fuel use is on, so I have no idea why the lose their gained speed so quickly.
TL;DR - The time gained is not due to using brake/throttle at the same times, it's not due to any in game driving assists, it's not due to a tyre switch, it's not as far as I can tell car specific, whatever it is it can gain the users 5mph+ apex and exit speeds as well as allowing them to brake much much later and lets them go up to at least 3 seconds per lap faster than everyone worldwide that I've seen.
Oh yeh and thanks for reminding me, forgot to mention that was a possibility, although I think if it is the answer the menu would have to give you the ability to change more than the default setups because setup alone won't gain you the sort of time some of these laps are finding.
Doh! 
It's not the worst driving ever... but even with sloppy driving if you take a bad line using CSA you can mash the throttle with tonnes more grip and maintain your exit speed easier it's pretty hard to really mess up when it's enabled.. And the driver above says he uses Brake and accel together CSA makes that easier to do 
He's currently 0.5 up on everyone in Gr.3 at Interlagos using the GT by Citroen, but haven't seen his lap yet, might try and get hold of it.
pretty damn arrogant and I don't like your manners! do not speak to me again as I was certainly not speaking to you oh sage of the online gaming world! Won't post in discussions like this anymore for a troll like you to talk to people like idiots? Don't have a discussion thread guys, just have an ask Spurgy section 
