DSP HLE use specific PC commands to emulate the DSP (sound, music, etc), but have a lot of bugs (also, some of these bugs never will be fixed due the nature of DSP HLE emulation)... DSP LLE read and execute the native code, providing more accuracy, but slower due the need of various CPU instructions to do simple tasks that would be performed with single instructions of HLE.
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 32 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)