Some years ago, when learning about quantum mechanics, and how you could find a particle inside a forbidden region, I connected that with physics engines in games (and how computing them not fast enough can cause things to intersect in odd ways), and I had this idea: What if time flows in discrete steps, but the `ticks` aren't uniformly separated? For example, they could be distributed probabilistically as a Poisson distribution. In that case, a particle hitting a potential barrier could pass it briefly, until the tick happens and it moves out of it. There might be a way to compute an optimal probability distribution for that case, but I'm not sure if it could be consistent with Schrödinger equation. But I never had time nor knowledge to search whether someone had already thought of it, or if it could be even remotely plausible.