Don’t see any Kodi logs in the link? Where are you playing the files from, locally, over network? smb/nfs?
My files are on an usb external har disk. The logs come from the command grab-logs -a (I don’t know other command).
Unfortunately, the Pi3 is too weak to decode HEV in software, and it can’t do it in hardware either. Same for the 3+ as well. The excempt for this is 720p24 or 720p30, that’s the most it can do in HEVC/H.265. If you’re willing to overclock and install custom heatsinks, you might be able to squeeze out some 1080p24 with low to medium bitrate.
https://discourse.osmc.tv/t/pi-3-h265-playback-experience/
Get a Vero4K 1 and enjoy UHD.
I have the Pi 3+ (a02082 so B model if I’m not mistaken ), I was thinking that it can run some h.265, my fault.
I will only watch h.264 movie.
Thank you for your answers.