sadly, it doesn't really speed up for me. seems like lag.
Also. the start-jump has the jumpcombo-multiplier of the last jump. So the 5000 piont death is impossible when you died before with a Jump-combo equal or higher than 2x. Or maybe its just purely random.
near to UNPLAYABLE without a feature to either gray out the previous reactions OR don't let previous reactions combine. Also remembering the opened groups and a search-function for easy element-using would be nice. But like this: 1.5/5