QSPICE64 and GUI gives different results

The exact same transient simulation ran from the GUI or in a command line with QSPICE64.exe gives slightly different results. Here’s a plot of the v(vout) for both cases superimposed.


That is the output of a boost DCDC converter. The results lead to a different calculated efficiency.
Are we expecting that?
Is there any parameter or random variable not considered when using the command line?

Harr.. My GUI is using QSPICE80. That’s the difference.

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