This is indeed a really wonderful performance of the Fantasy! Thanks for sharing! I absolutely love this great dramatic piece, with its serious solemn opening and the wonderful B major middle section.
When I studied the piece (as an amateur) I struggled quite a bit to have this safely memorized because the different sections (e.g. the "march" in quarters) all come with small differences when they reappear, my mind is not made for that...
I also struggled with the outward moving octaves (including jump) just before the march theme (I don't have the edition with me so can't give bar numbers, but it's around 5:00 and around 11:00 in your recording). It sounds so amazingly straightforward in your playing..well, I shouldn't talk about the woes of an amateur when listening to a terrific recording like this I guess...
Btw, in that "outward moving octaves" section all editions I've seen have some interesting difference between the first and second occurrence: in the 1st occurrence (in the key of Eb), all jumps in the bass go to the tonic Eb, whereas in the 2nd occurrence (now in the key of Ab), the jumps in the bass go to tonic Ab and dominant Eb. I think the latter (alternating between tonic and dominant) sounds much more convincing and one can hear many recordings doing a similar thing in the 1st occurrence (i.e. instead of always landing on Eb on the bass, one does Eb, Bb, Eb, Bb, in analogy to the second occurrence). If my ears are not mistaken (listening on computer speaker) you are also playing in this modified way. It seems this has become a performance tradition, but is not authentic Chopin, isn't it? It's not meant as criticism of course, just a question (I have also chosen this adaptation when I played and home-recorded this piece).
Sorry to talk about such a minor detail in such a wonderfully great performance, it's just something that randomly came to my mind...