Hmm, so I'm also having a very similar if not same issue playing back a 1080p file. Here's the media info:
S01E13 Angel One
Container: mkv
Path: /data/Shows/Star Trek The Next Generation/Season 01/S01E13 Angel One.mkv
Size: 6758 MB
Video
Title: AVC - 1080p - H264 - SDR
Codec: H264
AVC: Yes
Profile: High
Level: 41
Resolution: 1920x1080
Aspect ratio: 16:9
Anamorphic: No
Interlaced: No
Framerate: 23.976025
Bitrate: 20746 kbps
Bit depth: 8 bit
Video range: SDR
Video range type: SDR
Pixel format: yuv420p
Ref frames: 1
NAL: 4
Audio
Title: FLAC 7.1 - English - Default
Language: eng
Codec: FLAC
AVC: No
Layout: 7.1
Channels: 8 ch
Bitrate: 4050 kbps
Sample rate: 48000 Hz
Bit depth: 24 bit
Default: Yes
Forced: No
External: No
Image
Codec: MJPEG
AVC: No
Profile: Baseline
Resolution: 2240x2809
Bit depth: 8 bit
Color space: bt470bg
Pixel format: yuvj444p
Ref frames: 1
To confirm, most of my other files are working without issue
S01E13 Angel One
Container: mkv
Path: /data/Shows/Star Trek The Next Generation/Season 01/S01E13 Angel One.mkv
Size: 6758 MB
Video
Title: AVC - 1080p - H264 - SDR
Codec: H264
AVC: Yes
Profile: High
Level: 41
Resolution: 1920x1080
Aspect ratio: 16:9
Anamorphic: No
Interlaced: No
Framerate: 23.976025
Bitrate: 20746 kbps
Bit depth: 8 bit
Video range: SDR
Video range type: SDR
Pixel format: yuv420p
Ref frames: 1
NAL: 4
Audio
Title: FLAC 7.1 - English - Default
Language: eng
Codec: FLAC
AVC: No
Layout: 7.1
Channels: 8 ch
Bitrate: 4050 kbps
Sample rate: 48000 Hz
Bit depth: 24 bit
Default: Yes
Forced: No
External: No
Image
Codec: MJPEG
AVC: No
Profile: Baseline
Resolution: 2240x2809
Bit depth: 8 bit
Color space: bt470bg
Pixel format: yuvj444p
Ref frames: 1
To confirm, most of my other files are working without issue