Mkv stutter vs none in iso - Odroid N2

I’ve been trying to convert my ISO files to MKV for a while. I recently picked up an Odroid N2 and installed the latest stable release and started converting some movies to test.

I’m playing the Hobbit movies right now. The original ISOs are 3D. I used Makemkv to convert them. The mkv show up as 3d in the UI and I can play the mkvs in 3D on the current stable version of CoreElec. But the MKVs stutter in high action close up scenes. Not a lot, but enough for me to notice. While playing them in ISO is smooth without any stutters.

There’s 2 videos in the 3d Title that I remuxed. This the codec for the 2 videos-
Codec: Mpeg4 AVC High@L4.1
Codec: Mpeg4 MVC High@L4.1/StereoHigh@L4.1

Anyone know why the MKVs stutter, they are a remux from the ISO.
Edit - I forgot to mention, it’s the same issue when I play in 3d or 2d