The tension between the deterministic reality Einstein formulated in General Relativity, and the indeterminate characteristics of quantum wave theory have always fascinated me, despite the fact that I am an idiot when it comes to understanding the math. So you are entirely justified in being skeptical of what follows here.
Perhaps the only positive note is that, being outside the expertise of physics, I can keep asking the dumb questions on the hopes that I might get lucky.
The article in question here offers the results of new experimentation that seems to strongly suggest that the "epistemic interpretation" that Einstein hoped for just isn't to escape
the need to accommodate the non epistemic nature of quantum wave theory. Which, I have to admit, is wonderful for someone who likes to have at least some small empirical link to the mysterious.
In any case, though, one of the thoughts expressed by the article's author as to how to get General Relativity and quantum wave theory to live together would be "...to reconsider assumptions of the framework used to derive the theorems, perhaps by introducing backwards-in-time causality or parallel universes..."