Video files from GoPro Hero

I have problem with all video files from GoPro Hero 4.
Is very long time before video start buffering.
These files are MP4 1920×1080 25fps.

For demonstration I make preview:
https://drive.google.com/open?id=0B45UrP…l9RVmF1S2M
First video is from PhotoCamera 1920×1080
Second video is from Phone 1920×1080
Third video is from GoPro 1920×1080

All data are on NAS (My Book Live), but this is a not connectivity problem. Other apps have stream OK.
In Kodi is same problem when I select SMB or NFS protocol.

Some idea?