I was also a little confused on the softcut op at first, mostly because the volume parameter (the 4th) has an inverted range, IIRC: 0 for max, z for min.
Here’s an example that works for me (and keep in mind that the softcut op will simultaneously record both the physical inputs and any samples being triggered from Orca itself)
.D1.....
.*/1540z
1 is the specified softcut buffer (1-6)
5 is the record level (could be 0-9)
4 is speed (still a little murky on this, TBH)
0 is volume (max, in this case)
z is position (0-z)
The position parameter I’m still wrapping my head around — at its lowest setting, 0, it seems to record at a pitched down, low quality level. Feeding that parameter a z gives me the highest recording quality.
I tested this with a simple sound coming into the inputs and it did the trick.