Which is slow among the two? Latches or Flip-Flops?
Latch triggers have 5% efficiency, since it takes 95% of the time for the latch trigger to settle in a logic 0 or logic 1, before the fluctuating of the signal stops. This is do the technology with wich they are built. On latch triggers you detect the voltage level, which has transient processes and settles after 95% of the time.

Flip-flop triggers are switched by front, rising or falling, they have 100% efficiency based only on the time necessary for the front to rise or fall.