I have some big sop level vex wrangle nodes and they are fast to compute, but take relatively long to compile, which affects scene loading times etc.

What's the fastest (and simplest) way to save and load a compiled version of the wrangle code? (Would it even make a difference?)

Also how do I best embed those files in an HDA?

Have a look at VCC:
https://www.sidefx.com/docs/houdini/vex/vcc.html#command-line-options [www.sidefx.com]

I had a look at this before and I didn't see what I was looking for. Maybe it's because I don't know what exactly I am looking for there. Could you please point me at some specific command(s)? Of course, a very basic example would be even better.