Playback Stuttering on iPad Mini 2

I have an iPad Mini 2 on iOS 12.4.8. I just started using this old iPad with Infuse and noticed that with one group of media files, the playback on Infuse stutters. I am using Infuse Pro 6.4.9 (3213).

The mediainfo of one of the files in the troublesome group is attached.
FileInfo.txt (6.1 KB)

Can someone explain to me why this group of files can’t be played on Infuse? Thank you.