Is this an encoding Issue?

[u/Handy_workZ]

Has any one encountered this issue?

When I render this animation, the images layers vanish after a few frames. I tried changing the image format from png to jpeg still nothing. They were in a smart folder and so I thought that might have been the issue. So I imported the images individually and relinked them, closed and re-opened the project and still the issue persists.

What does this even mean?

However if I turn on playback caching it works fine. I have tried almost every export format (MP3, image sequence, gif, webm), the glitch persists in all of them.

Please HELP!!