Pixelation/Corruption of animated shows

This is a strange problem as I don't know if it's a rendering issue, a codec/decoding issue, or just the nature of the Raspberry Pi.

I'm using a Raspberry Pi Zero to play media over SMB shares, and for the most part everything works flawlessly over Wi-Fi and Powerline Ethernet. However there is a small handful of animated shows which when played have a tiny bit of lag (at certain points the video will stop for a split second) or have severe pixelation in background colours/warping/mismatched colours/green corruption.

If I play them on my Windows PC with MPC they turn out fine, and I've another PC with a stable version of LibreELEC which also plays fine, so it's only the Pi with the problem.

Okey dokey, here is the info;

Video 1
wTLcqDU2

Media Player Classic says:

Video: MPEG4 Video (H264) 1440x1080 23.976fps [V: h264 high 10 L5.0, yuv420p10le, 1440x1080 [default]]
Audio: AAC 48000Hz stereo [A: Japanese 2.0 [jpn] (aac lc, 48000 Hz, stereo) [default]]
Audio: AAC 48000Hz stereo [A: English Dub [eng] (aac lc, 48000 Hz, stereo)]
Subtitle: Advanced SubStation Alpha [S: English Subs [eng] (ass) [default]]
Subtitle: UTF-8 [S: No subtitles]

Video 2
8x7Kw1em

Media Player Classic says:

Video: MPEG4 Video (H264) 1440x1080 23.976fps [V: h264 high 10 L5.0, yuv420p10le, 1440x1080 [default]]
Audio: AAC 48000Hz stereo [A: Japanese 2.0 [jpn] (aac lc, 48000 Hz, stereo) [default]]
Audio: AAC 48000Hz stereo [A: English 2.0 [eng] (aac lc, 48000 Hz, stereo)]
Subtitle: Advanced SubStation Alpha [S: English Subs [eng] (ass) [default]]
Subtitle: UTF-8 [S: No subtitles]

Ah I figured that might be the case, I'll have to look into converting them but it's good to know the limits of the Pi Zero.