First prestige observations now!
I notice that upgrading with a mushroom sets the time to 5 but doesn’t check if it would be faster without the mushroom; if you use one on the first crank upgrade, for example, it goes from 2 seconds to 5. Not a super big deal, but easy to fix, obviously.
Speaking of RNG, I’m not sure if I just got unlucky pre-prestige and insane luck 1st prestige, but after having to spend nearly hour to get to prestige 1 prestige 2 took under five minutes; I got 3 shards and a second mushroom very quickly. It feels a bit like the pace difference between prestige layers is a bit over-tuned, though again I don’t know if that was just odd luck in my case.