The fastest rate at which humans appear to be able to process incoming stimuli is about 13ms. A response time of 100ms is perceived as instantaneous. Championship video game players fall into the 100 – 120ms
What was the variable "delay" on the flippers again?
Many pinsiders are known cyborgs. This data confirms it.
FYI, this chart applies to video games as a comparison:
300ms < game is unplayable
150ms < game play degraded
100ms < player performance affected
50ms > target performance
13ms > lower detectable limit