[pd] gui redraw improved by holding down a random key

[hard off]

actually, just playing round with the audio settings is having an
effect here.  even though compute audio is turned off.

it seems that the rate of gui redraw is connected to the audio
latency, and somehow you can override that by holding down a key on
the keyboard.




hmm.. kind of annoying this...why can't pd do simple graphics stuff
that was possible on commodore 64?