I started a new project with just one instance of Halion Sonic SE, with 8 sounds and 2 fx loaded in multitimbral mode (on 8 tracks each with its own channel) using 3 stereo outputs and working in 5.1 suround and 32bit 96kHz.
Loads of crackles! So I raised the buffer size. No real improvement - though I can run anything else at the buffer size I started with, and this is not exactly a heavily loaded project!
Eventually unticked Multiprocessing in Device setup, and all crackles gone! Restored buffer size to normal and all is still ok.
Is this an i7 thing? First time I’ve come across this issue since building this PC.