Improving pen input sampling time on Android

I am using a Boox device where pen input can be painful due to the e-ink lag. However, with 'boox rapid draw' this can be improved: the pen gives a preview with almost no lag in an overlay above, which is then rendered by the software below. This works well in almost all software with pen input. However, in Zotero, this does still not give a good experience: when I write at natural speed, only about half of the strokes are rendered into the annotation, while all of them are shown by the preview. I think this shows that the sampling time of the pen input could be improved (something similar was the case in early iOS version).
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