Avatar Joint Upgrade (AJU) Phase 2 Rollout & Updated Migration Recommendations
Summary
Roblox is rolling out Phase 2 of the Avatar Joint Upgrade, replacing traditional Motor6D joints with physics-capable constraints for improved movement. While developers can temporarily opt out, a full forced migration is planned for the end of the year, and new scripting recommendations have been provided to avoid performance issues.
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Community reactions
you and i both know there’s gonna be more
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So you’re now breaking games that rely on Motor6Ds for an update that’s chiefly meant for “realism”. Why can’t this remain opt-in?
i would much rather this be opt-in, but i guess we don’t get that at this age of roblox anymore
Why is this a “temporary” opt-out? Why can’t there be both the old, and the new systems. This doesn’t seem like a necessity to force at all.
Automatic opt-out for existing experiences please.
I don’t see any need for this to be a forceful opt-in feature. it’s always possible to just keep the disabled functionality. why isn’t this possible?
Great update! Can’t wait for phase 3.
R6 is unaffected right? [max char count]
Nice! I don’t see any glaring animation issues anymore when this is enabled. How are ragdolls supposed to work though? When I set the AnimationConstraints to be not kinematic, movement becomes extremely wobbly and bouncy. It’s funny though! :3
Zacgamingpro1234_Dev: R6 is unaffected right? [max char count] Yes R6 games are unaffected. avocado: How are ragdolls supposed to work though? When I set the AnimationConstraints to be not kinematic, movement becomes extremely wobbly and bouncy. I’ve gotten the best results by keeping the Root.IsKin
I was worried about that at first too, but it’s actually VERY easy to convert. Just do a Find-and-Replace search in your scripts. Wherever it says “Motor6D.C0” change it to “AnimationConstraint.Attachment0.CFrame” and everything should animate smoothly again. EDIT: I am trying a different approach u
i guess, whatever at this point. hopefully this is the last forced change that will cause breakage, since surely the avatar system should be in it’s peak ideal state according to the platform views. this really is just exhausting.
so at this point if you aren’t continuously babysitting your game then it’s dead and also broken stop it
im assuming this only applies to avatars? surely things such as viewmodels wont be broken because of this right?
hands are BAD... In my opinion the joints too 👎 reject my message if I'm wrong. I am only for good updates rather than bad ones.
this has nothing about the hands at all
this is nice, but what about r6? does r6 have rig support yet???
This announcement explicitly warns against doing that: Homeomorph: Do NOT modify RigAttachment.CFrame or Attachment0.CFrame for procedural Animations.