low fps on raspberry cm4

[jd3096-mpy]

I test it on raspberry cm4 lite
changed the window to 320x240
but the fps is just 10
then I run it on laptop fps is about 50
how can I improve fps on raspberry?
3q

[nordost8]

You can also reduce the "n_frequency_bins" option. Your low fps is expected for raspberry specifications. This program is quite slow because of pygame :(