Hallo!
Considering the patch posted by Georg Holzmann (the same principle as http://crca.ucsd.edu/~msp/techniques/latest/book-html/node121.html)- Surely if the block size is default 64 samples, the delwrite atom will take at least 64 samples to write to the delay line... So the delread (next in sequence) cannot read out the contents of the delay line until AFTER this has happened?
if the delread is computed after the delwrite you can read out the delay line immediately - so down to 1 sample delay.
See the patch G05.execution.order.pd !
LG Georg