The tension is not with FTL, but rather with the tension of a seeming need in QM for "now" and that in relativity of "not now". There are a number of ways to wo

The tension is not with FTL, but rather with the tension of a seeming need in QM for "now" and that in relativity of "not now". There are a number of ways to work in a "now" in a way compatible with the mathematics of relativity. For a full exploration of these ideas, one can see https://arxiv.org/pdf/1307.1714.pdf https://arxiv.org/pdf/1307.1714.pdf which explores ways that the wave function itself possesses multiple possibilities of extracting a "now". To what extent those "now"s are acceptable is certainly open to much debate.