I only have the RC-F, and I’m using a DS4.
Well I've given it a quick go.
It was a bit of fun, so thanks. 👍
I'm not sure if this will help.
To be honest I found the standard setup not too bad, and I didn't know what issues you were having.
I'm also hopeless on a controller these days so I haven't bothered to test it that way.
Anyway, I went with only adjusting the car to try and help keep the back end in check.
So I softened it, straightened the wheels, opened the diff., more downforce, longer gears, and less power.
(Gears I just set Max. Speed to 200mph and adjusted 1st, 2nd, and 3rd)
The car can certainly go quicker, but I wasn't trying to tune it for the fastest lap time.
I ran it on Inters. Probably should have tested the Heavy's but didn't bother.
Probably should have put more time into tuning it too for that matter, but see what you think.
I tuned it using only ABS on Default and no other aids.
This may at least give you some breathing room if you wish to add some aids due to being on a controller.
Unfortunately I had a better run the first time I tried the race, but I had the stupid Snowball mic. on and all the audio was echoed, so I had to run the race again.
Second time around I over-cooked a few corners and got a bit lazy.
But here's a video of me doing the race.
Yep ... I'm a pleb that uses cones and chase cam.
Braking points for the main braking zones at the end of the long straights is actually the white line before the cones.
The video always shows it being later than it really is.
My only tip is to avoid the kerb on the Turn 3(?) hairpin, and don't throttle hard if on the inside half of the track for that corner.
It prefers to be pointing straight and on the outside of the track.
Otherwise it seems to handle most corners, different racing lines, kerbs, and sausages quite well. 👍