Early morning tests not promising.
I decided to go balls out and smash everything down to 2d (via fluid.pca~) and try matching based on that.
I also used your pipeline of [data] -> fluid.standardize~ -> fluid.pca~ -> fluid.normalize~.
Pre PCA I was getting around 67% accuracy. With a 2d version of the same data I get around 25% accuracy… (plus some new error messages to boot)
I’ll try some milder reduction to see how that fares, but in this context, that much smashing is definitely “lossy”.