Forgive me if I am getting a bit impatient, but I don't think you fully understand the idea of the chord-attack. I am still waiting for more explanations why you are having problems with this bar:
Bar
I'm having problem with this bar (at that speed) because I simply can't play it at that speed
Even using chord attack the "rolled-chord" is not that fast, it's way slower
Then I've been told that I have to roll chord by not moving my fingers only my wrist, but this movement clearly works only with the practice, as when I play the piece I've to use a different movement that involve finger movements (my teacher wouldn't let me play this piece just with wrist rotation and my fingers not moving)
So, with flat fingers I can play at a speed much slower than final speed the first four notes after a lot of chord attack practice
You said not to keep my hand stratched
But since the notes are legato it is not possible to close the hand after the first four notes as if you close your hand you can't reach the 5 and 6 notes, only with a jump... but that would then be staccato
I understand what you say about rotating my hand and I think I'm doing it when I play the chunk
Yet, I don't understand how can you play a 4 notes chord here without having the thumb aligned with your forearm
So, playing a 4 notes chord here would result in ulnar deviation, it seems to me
Anyway, I'm forgetting for a moment about this piece as I've break my hand trying to play this fast
I'm now more interested about the first one
First ChunkI've used chord attack practice here
The same problem as above: the "just rotate your wrist without moving your fingers" can work in the practice but cannot be used when you "play" the piece at your lesson
The rolled 4 notes chord is not as fast as final speed would be and if I just practice 2 notes chord attacks, when I put them together it's just sloppy and slow as when I practice a 4 notes chord
Of course when there's the hand displacement I've more problems as even after a lot of lateral displacement practice I keep missing the key
The funny thing is that instead of improving, this whole part is completely worsened and I don't seem to be able to play it anymore

Thanks a lot for your help
Daniel