This is likely a result of the animations being culled when other players aren't looking at it. You might be able to fix this by finding the DnB's animator component and setting the culling mode to 'always update'
Look inside the assets at the bottom and find the DnB folder and find the Dn B Params, click on that and look at the inspector on the right hand side and you should see a bunch of boxes, uncheck the Default for DnB_On, if you need a visual refer to salvadortaco in the comments below, they took a pic of it