New experiment places limits on the smallest possible increment of time

Long ago, I played around with a simple Newtonian gravity simulator, because playing billiards with a solar system is fun, etc. And I noticed that orbits precessed proportionally to the size of the time step.

I was momentarily like "I wonder if this means quantization of time could be an alternative explanation for the precession of Mercury" before it became clear that it just wasn't a very good algorithm, and the amount of precession vs. time step was way too large to be consistent with reality.

I wonder though, if you can take the hypothetical minimum time as in the article and come up with a precession figure that would be potentially measurable on some natural object.

Sabine Hossenfelder examining if there is a minimal length might complement this.

http://backreaction.blogspot.com/2020/02/does-nature-have-mi...

Can someone explain this so a non-physics PhD can (at least partially) understand it? ;)