LG tv playback has started to lag/freeze every couple of seconds

[CybranM]

Thanks for the reply!
Here is the Media Info for the episode: 

Code:

Perfect Planet - Episode 1 - Volcano
Container: mkv
Path: F:\Shows\Perfect Planet\Perfect Planet - Episode 1 - Volcano.mkv
Size: 25382 MB

Audio
Title: Surround 5.1 - English - DTS-HD MA - Default
Language: eng
Codec: DTS
AVC: No
Profile: DTS-HD MA
Layout: 5.1
Channels: 6 ch
Bitrate: 2108 kbps
Sample rate: 48000 Hz
Bit depth: 16 bit
Default: Yes
Forced: No
External: No

Video
Title: 4K HEVC HDR
Codec: HEVC
AVC: No
Profile: Main 10
Level: 153
Resolution: 3840x2160
Aspect ratio: 16:9
Anamorphic: No
Interlaced: No
Framerate: 23.976025
Bitrate: 66125 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: HDR10
Colour space: bt2020nc
Colour transfer: smpte2084
Colour primaries: bt2020
Pixel format: yuv420p10le
Ref frames: 1

Audio
Title: Surround 5.1 - English - DTS
Language: eng
Codec: DTS
AVC: No
Profile: DTS
Layout: 5.1
Channels: 6 ch
Bitrate: 1536 kbps
Sample rate: 48000 Hz
Default: No
Forced: No
External: No

Audio
Title: Surround 7.1 - English - Dolby TrueHD + Dolby Atmos
Language: eng
Codec: TRUEHD
AVC: No
Profile: Dolby TrueHD + Dolby Atmos
Layout: 7.1
Channels: 8 ch
Bitrate: 4450 kbps
Sample rate: 48000 Hz
Bit depth: 24 bit
Default: No
Forced: No
External: No

Audio
Title: Surround 5.1 - English - Dolby Digital
Language: eng
Codec: AC3
AVC: No
Layout: 5.1
Channels: 6 ch
Bitrate: 640 kbps
Sample rate: 48000 Hz
Default: No
Forced: No
External: No

Subtitle
Title: English - PGSSUB
Language: eng
Codec: PGSSUB
AVC: No
Resolution: 1920x1080
Default: No
Forced: No
External: No

When I play on my TV I use "Surround 7.1 - English - Dolby TrueHD + Dolby Atmos" for audio without any subtitles