64bit OS verses 32bit OS?

hey all you pianoteq people

looking into an arms powered pianoteq workstation and have a rasberry pi 4.

its OS runs on 32 bits so far, though they are developing a 64 bit system.

ubuntu has a 64bit OS for the pi, and i was thinking of installing that onto the pi 4

my question is this : does having a 64bit OS speed up pianoteq or does that only speed up the GUI of the OS
https://omegle.onl/