When I play a PSX game I get cracking audio and can’t figure out how to fix it.
Your CPU is likely too slow to keep up. Mednafen PSX is a pretty demanding emulator.
Changing the audio driver to Xaudio2 helps a little on my system, but it still crackles quite a bit. I have an i5-2500K running at stock 3.3ghz. In regular Mednafen I can fix the audio crackling completely by changing sound.buffer_time to 100. I don’t notice any sound lag with it turned up that high either. Could a core option be added to crank up the sound buffer?