Hi there’s a plugin we created called UMG Cinematics.
Basically it allows you to add UMG widgets as section in sequencer. And you can set unique text per widget. In your case this unique text would be the subtitles.
how long an instance of a subtitle appears is controlled by the sequencer section, just like you’d control a shot section and others…
Here’ s a youtube demo : https://www.youtube.com/watch?v=Dtmr9feW7_4
The plugin is not just meant for subtitles, but for every 2D layer since UMG is mainly for 2D graphics…