Subscene was the gold standard. While the site is in read-only mode, you can still find high-quality fan-translated subtitles. Search for "Madrid 1987" and ensure the subtitle’s comments mention "synced" or "proper timing."
Once you find a link, follow these steps: madrid 1987 english subtitles download
Renting from these services costs $3–$4 and supports the filmmakers. The official subtitles are professionally localized. Subscene was the gold standard