Tomas Slancik

your path in
is invalid to begin with, since the node holding the iteration metadata is called foreach_begin1
but even if it was valid, detail() VEX function expects geometry, so either input number, file path or op: string pointing to sop node
since you want to directly point to sop node you need to specify it as

but it may be just easier to connect foreach_begin1 to 2nd input of wrangle and do:

use Performance Monitor to see where the potential slowdown comes from

since ideally there should be no inherent slowdown when simulation runs inside of HDA or not, and many SOP level solvers are HDAs to begin with

so any slowdown is likely coming from how the HDA is build and what more is being cooked during sim compared to the sim outside, etc..

mzigaib
Here is an example comparing DOP and SOP workflow.

you forgot to uncheck Reseeding

as mentioned above [www.sidefx.com] if you want to oversample just sources, you can modify oversampling parameters , but then turn off Reseeding again so that only sources are seeded and not the sim