I am currently studying this waltz - in fact in a sense I am almost done, but, except for the central, slower part, I am nowhere near the really fast 264 for a quarter note speed, possibly original metronome indication by a Chopin. I am probably around 120? I measured it once and it was quite humbling so I forgot the exact number but assume right now I can't even do half that speed, and I can't do 264 even with separate hands.
Now, I restarted playing the piano a few months ago, and other pieces I could/can play by Chopin are Waltzes op 69 n 2, op 64 n 1 (it was decent but surely not in a minute), op 18, Nocturne op 9 n 2. So, at my level that speed may not be achievable, or may not be wise to try too hard.
Still, without fixating on 264 I'd like to try in the next couple of months to see where I can get it. Currently the bottleneck with hands together is the fact that I have to look at the hands from time to time since this thing is quite jumpy. This already slows me in the first half of the brilliant part, ending with a G hold for 3/8 where the rhs is not so jumpy; it gets even worse in the second half of the brilliant part since both hands are very jumpy.
Perhaps I need to decide on one hand to focus and learn to play the other one without looking? How do I choose? I have never worked on trying to really push the speed of a piece so I am not sure of the specific kind of technical work needed. So far it has improved in speed by just playing it and studying it normally, but I think that is tapering off.
My teacher likes how I am currently playing it but is not exceedingly keen on me to go into a specific work to speed it up, so he is not providing much specific advice. Still, I'd like to give it a try. Again just to give an idea of my current level, he suggested me to study Schubert Improptu op 90 n 2 as one of my next pieces.
Thanks in advance!