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I find that for sight reading piono scores, if they are complex I print them out enlarged and go through to make sure I read the right notes on those staff extensions, and put in extra sharps & flats etc where they may get forgotten. There is an essay by Busoni the details of which I have forgotten now arguing for a new, clearer notation. The notation is a means to an end, so hack it to make it work for you. I am doing this with some Medtner piano music now. Then I try to get the notes right first time by going as slow as needed, annotating as I go. I am learning to use Dorico now, so some things I am rewriting to solve two problems at once. Whatever, I think a slow test of tricky passages with annotation is critical for me.