I tweaked the scriptlet(?). This is what I'm using:
copy move WHENEXISTS=rename to "{filepath|\}XXXrecycle"
I replaced the original Delete command in Dopus with the above. So when I select "delete", it moves to root\XXXrecycle. But, you have to create the XXXrecycle folder first.
On my system at least, moving files to the same drive is instant, while deleting permanently or to recycle bin takes 1-5 seconds, and in thumbnail mode it can take a really long time if a large number of files is selected.
Also I'm using 10.5.2 x64 if that makes a difference. The only problem I've encountered is that a few times there was an error message, even though the files were moved correctly. I don't know why that is tho.
Additionally, I made a Autohotkey script that moves all contents from all the XXXrecycle folders into the real recycle bin once per hour, so I can survey if I've deleted something I needed before I empty the recycle bin.