When using the HTML VIDEO tag, and its LOOP property, the video is interrupted, what should I do about it?

Question

HTML

The video reaches the end, before it starts playing from the beginning, there is not much delay.
Is there a possibility to avoid it?
Everything is fine in the adobe effect source with Loop.
Here is a working example - eu.battle.net/hearthstone/ru
Test site where the problem is - lop.webcurio.by/en