Signal-rate order of operations AND/OR Max slop funny business...

So I'm working on an updated version of my onset detection patch, and in trying to get more of the patch working in the signal domain, I've run into a problem when I finally want to convert the output of it to the Max domain.

In an initial version I was using [snapshot~ 1], which works fine, but is super expensive, and is a bit slower than the version I came up with.

What I want to do is convert from the signal domain to the Max domain whenever a value has changed. Simple enough right?

So I've gone [sah~] -> [change~] -> [edge~] -> [snapshot~].

In doing this it acts really weirdly. It works a lot of the time, but sometimes it sends the previous value, sometimes it doesn't do anything at all.

This led me to think that there's some kind of weird signal-rate order of operations thing happening, so I've tried versions with some small [delay~]s in the mix, but it didn't help. And I've also tried [deferlow] after [edge~] thinking it was a Max slop thing. Also to no avail.

Any thoughts as to why this isn't working?

OR is there a better way to go about doing this?