If you loved Synchronic, try Resolution
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Aaron Moorhead, Justin Benson, and they both carry the dread mood tag, and they sit in Horror / Thriller territory. If that's the register that drew you to Synchronic, the second film will land in a comparable space — through a different lens.
dread
What Resolution is
California backwoods. Winter chill. A ringing telephone. One friend chained to a radiator; the other, desperate to detox him. Strange artifacts appear. Notes warn them to leave. Benson and Moorhead find dread in the desert.

