Plex 0.9.17.2 transcodes a lot more (ATV4)

Hi there,

now Plex transcodes a lot more files on my Synology to ATV4. Or the transcoding is slower than with 0.9.16.6. Very frustrating as I get a lot of loading screens now. That wasn't the case with the same files on the older version. Example:

Codec: MPEG-4 Video (DX50)
Resolution: 496 x 384
Framerate: 25

I can't find any possibility to change this behavior in the settings. Also I can't downgrade anymore as the package center says it's not possible...