(My mail program mangled this message for some reason, so I copy/pasted the quote below. I hope it's the correct one to respond to...)
Right now I have the master audio stream (= the audio of all matrices) going into the clone object, so it sounds like i have several delay effects with different settings on the master channel. It sounds nice, but it is not what I want right now:)
Jakob, the next step would be to add a [switch~] object to each of the instances inside the clone object, then enable/disable based which one you want to use. That could work as dsp will not be performed on those which are switched off, saving CPU.
A simple solution is for each instance to accept an "on" message with a float (1 or 0) to enable/disable. Then to enable as ingle one, send a [all on 0< message followed by the single one to enable, [1 on 1<.