Jittering allembic animation

I’m rendering an animated scene using an animated cloth asset I’ve created in another program. When I import the animated allembic file it imports fine and animates as planned, but it’s super shaky on animation. Not just in the final render but even on playback in the editor (when update animations in editor is on). Nothing else in the scene is jittering, just the animted mesh, so it seems like it’s a file processing issue?

Is this a framerate problem? Or to do with file size?

Pls help!