If you prefer not to manage files manually, the show is available with built-in, multi-language subtitles on: (in most regions) The CW App/Website (Free with ads in the US) Amazon Prime Video (Buy/Rent)
If the subtitles are slightly off-sync in VLC Media Player , use the G key to delay them or the H key to speed them up by 50ms intervals. The Flash (2014) subtitles
: If they don't auto-play, simply drag and drop the .srt file onto the video window while it is playing. If you prefer not to manage files manually,