Animation not looping in marmoset 3

Narv

The animation is 23 frames, 24fps, which I have set up in marmoset. The animation loops in Maya and I checked it in our school 3D engine and it loops. But in marmoset it studders on the last frame which makes it not loop (and it looks wonky) Does anyone know why? 

EarthQuake

This is likely an interpolation issue. In Toolbag 4 we've added a loop option for animated meshes that may resolve this. I would suggest downloading the free trial and giving it a go.

https://marmoset.co/toolbag/#dltoolbag