I think it would be more informative when FG gives more detailed feedback about the state of the optimization process, like which tasks are done, as well as a time stamp. In my case, running FG on a large dataset, I don't have a clue if the process is running properly or if FG is frozen, because nothing seems to have changed since more than a day(!).
Optimization process
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I see that the command line version is more informative and faster with my data set, so I withdraw my request.