Animation replication is broken

Hey guys, I just realized my animations aren’t replicated correctly between clients… is that even possible?
Like my animations are “too heavy” maybe ? (fully baked keyframes for now)
It looks like most people have problems with the speed of syncronization, but I didn’t see people speak about completely broken result. But maybe it’s the same.

I disabled everything like the weld with the weapon, same result.
Btw it’s the idle animation and I swapped the value of the animate default script for this.

Thanks !

Ps : It kinda feels like there is some limits about the poisition that can takes the bones oO