Problems with Movies

Hi, I have been having issues with movies constantly buffering. They are mkv containers containing blue ray rips that have been created with makemkv. My TV shows play back without any buffering. Problem seems to occur only with those created w/makemkv.

Mediainfo shows for Kingsman: The Golden Circle
Matroska 30.1 GB 2 h 21 min
1 video stream AVC
3 Audio Streams DTS/DST/AC-3

First Video Stream
English 23.4 mb/s 1920*1080 at 23.976 (24000/1001) FPS, AVC (High@L4.1) (CABC/4 Ref Frames)

First Audio Stream 23.4 kb/s / 1 509 kb/s / 48.0 KHz, 24 bits, 8 channels /6 ch

Btw the movies play using Plex with no buffering

Any suggestions appreciated

Are you using an Apple TV 4 or Apple TV 4K?

Connected via Wi-Fi or Ethernet?

In general, Wi-Fi will be faster on the Apple TV 4, but Ethernet is faster on the Apple TV 4K.

Hi James, I have the Apple TV 4K. Have tried both ethernet and wifi w/the same results.

Any Suggestions?