...
Extended Question: Say that the analysis resolution requires 0.005 sec output time-step size. What time-step size should be used for input acceleration record and what time-step size should be used for input displacement record?
Answer:
...
The output time-step size should be small enough to provide sufficient resolution for the analysis. You can check this by decreasing the time-step size until the step size is small enough that results are not longer affected by it.