[ashlar]

It's happening with the Hero Academia episodes from Horrible Subs. The strange thing is that other shows are even at native 23.976 but it's happening with this series. I just want to know if there's a way to do the same as video player to make it 23.976 but with DSPlayer

 It switches just fine, this is MadVR handling changing to 23 auto from the settings pane, on Ep1 of My Hero Academia S3, HS.

 

If these are MKVs, I'd modify the files refresh rate with mkvtoolnix and see if playback stays smooth.

Use the header editor and input 41708333 under the Default duration entry.