Is the maximum length of grains 12,000ms?
If I put a very slow tap tempo via midi in then switch from tempo to ms, then it can show some very big numbers (eg 72,000ms) but seems to default back to 12,000ms in reality.
In a non-granular way we now have effectively a 12 second delay pedal if pitch is at unity and grains are forward. I like !
Especially as i can have 2 (or even 4) very slightly different long delays at once.