Set VI Skip Activation to Half The Audio Buffer

[Sam-Belliveau]

It's kinda complicated to explain why I would want to do this but here it goes.

It does not actually matter where the VI Skip Activation is, all that matters is that:

1. It's not too close to 0 [on time] because that causes unnecessary sleeping
2. It's not too close to -100ms, because that causes slow down
3. It's shorter than the audio buffer (prevents skips when going from >100% to <100%)

The current VI Deadline is exactly the length of the audio buffer which CAN cause stutters when VI Skip begins to activate. This should get rid of that stutter.