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.