If someone is sick enough that a "quarter second" matters, there's zero chance the tablet is out in the first place. In reality if a quarter second is enough to kill someone, they're gonna die anyway...
I feel the same about my EKG. What's a quarter second when it comes to measuring a heart? Who cares about precision.
A quarter of a second in measurement resolution of an EKG is huge. An extra quarter of a second interpreting or documenting that EKG couldn't be any more meaningless.