rpi 3b+ video stutter

**Describe the bug**
background video is stuttering slightly (video is not smooth), maybe this is a problem with hw or raspberry os
no problem on more powerful device

**Version Numbers**
HACS v0.6.3

  - Home Assistant:
  - Animated Background:

**Device (please complete the following information):**
 - OS: raspberry OS
 - Browser default chromium browser
 - Version 10

