A bit too pandering at times when things that read visually and emotionally are also explained verbally, but I don't think these moments ruin the over-arching narrative.

The film becomes caught between a cerebral drama about scientific discovery and a more generic cat-and-mouse potboiler, ultimately leaning toward the latter.

"Curvature" isn't "Primer." It's not even "Hot Tub Time Machine." It's far more pedestrian with tempting working parts, frequently coming up short on thrills and intrigue.