As Diznario said, it was 5 seconds in alpha 5 and prossibly alpha 6. Even with alpha 7 mine was still on 5 seconds.

So you could downgrade to alpha 5, set 5 seconds and then upgrade to alpha 7. As long as you don't touch the setting it will stay on 5 seconds.

There is a bug here. The crossfade "slider bar" for want of a better word tries to run off the end.

CH