Hello Kairess,
Sorry I'm a bit confused.
How did you update BIOS?
You received the update from My ASUS or you downloaded form website?
If you downloaded from website, the 304 BIOS for LXS was just released on 7/14.
May you double check?
https://www.asus.com/Laptops/ROG-Zephyrus-Duo-15/HelpDesk_Download/Also, if you use the second monitor on-off button above the touchpad, to switch off and on once, does the animation come back?
Thank you.