You don't optimize things for the cases when they are fast. (Unless the gain is a couple of orders of magnitude; certainly not for a 50% speedup.)
The 15% gain is the one that matters. On practice, it comes at the expense of a more complex (thus larger, negating some of it) and less reliable system. It is very rare that this trade-off is worth it.
You don't optimize things for the cases when they are fast. (Unless the gain is a couple of orders of magnitude; certainly not for a 50% speedup.)
The 15% gain is the one that matters. On practice, it comes at the expense of a more complex (thus larger, negating some of it) and less reliable system. It is very rare that this trade-off is worth it.