After I noticed the English subtitles aren't the exact meaning of the spoken language, I stop using subtitles. While I am not native in Thai, at least it helps me understand the motives of the characters (as written by the scripwriters).
It's on True Movie (https://movie.trueid.net/th-th/series/) for which you are required a less than $2 subscription a month to access. However, I do not remember seeing subtitles.
This is a surprisingly good series and I would recommend university students who have studied criminology or philosophy to watch this. It will make the theories learned relevant to them.