Finally this is the video in which I explain to you why THAT THING happens + all the possible solutions.
Basicly Blender gives you a bad surprise after days of render: big glitches everywhere.
This happens when making deformations and / or character animations, cloth simulations, metal deformations with Rbdlab, and so on...
Enjoy!
LINKS:
Charge - Blender studio open movie
https://youtu.be/UXqq0ZvbOnk?si=BoOZptzYmc-dEjK3
RBD Lab addon
https://blendermarket.com/products/rbdlab?ref=450