Hallo!
well, it's not that easy ... at the moment pd's dsp chain has to be recompiled if the position of an array in memory has changed ... so it's not really a question, pd vs. flext, but a question pd's array, which is more or less a storage object, vs. an array object, that acts more as a server object for several clients ...
Okay thanks - I understand now. So I think I will stay with the upsampling hack if it is working good enough :(
LG Georg