Mike updated Qspice in response to your request.
10/02/2024 Implemented a .option culltime to allow one to select the minimum elapsed time required before dumping transient analysis data to disk.
To clarify, what is limited to 2ps is NOT the simulation timestep, but rather the CullTime that restricts the minimum time required to pass data points to be saved in the .qraw file. In general, this limitation is beneficial unless you are simulating picosecond-level applications.
