>Starting from this version, the processing of media files using HEVC (H.265), AVC (H.264), and VC-1 codecs will be transitioned from the server to end devices to reduce unnecessary resource usage on the system and enhance system efficiency.
https://www.synology.com/en-us/releaseNote/DSM
They say it's to "reduce unnecessary resource usage" and "enhance efficiency", I say it's the start of a race to the bottom of the barrel now that the market is saturated and BOMs start weighing heavier.