I don't know what the conditions for this category are. So I ended up using mouse, but I can technically go even faster using touchscreen. Sub 5:30 is possible.
If it takes on average 2.5 seconds to finish a puzzle and about 2.5 more seconds for the transition between finishing and selecting the next puzzle, it would take about 57*5=285 seconds or 4:45. By this logic, sub 5:00 should be possible.
However, this was just a fun game I could speedrun since I suck at every other game.
Mod edit : You can use Touchscreen,there are no Rules that say you can`t use them.
Workshop categories will be deleted for 2 reasons: First, the goal is totally arbitrary (why 50?). Second, because you can create levels yourself, these categories are irrelevant.
Thank you