Dear AlfredoZafra,
Many thanks for your comment; it is much appreciated. After checking the influence of long resting time, we identified that, for the model without hydrogen traps, the temperature domain was uniformly sampled (unlike the Orinani and MF models). This causes a dense sampling to be required for a smooth flux curve, as you found. We have resolved this issue, and you should no longer encounter it in the latest version of the software.
