I’m glad that you found a workaround but if it works with fixed delay like that there’s a big chance it won’t work on some other machine that is slower/faster
How to fix it in most (but not all?) cases:
(I) Enable “Support Skin Chache” in “Project Settings”
(II) On the skeletal mesh with the morph targets, choose “Recompute Tangents” in the skeletal mesh viewer (under “Build Settings”)
(III) In the Blueprint that uses the skeletal mesh, add a single entry to “Skin Cache Usage” and set it to “Enabled”
Isn’t this just a floating point related issue?
Maybe it isn’t but it smells like it.
Lumen is probably at fault regardless, but I wonder if the root cause isnt just due to a bungled data type switch within the skeletal mesh skin system…
Ps:
Your suggestion should be the defacto default for any character.
And the option for tangents should likely also be toggled at the individual material slot level.
I’ll give this a try, if it works I’ll probably need to update a bunch of my marketplace products.