Broken/Choppy Label Artwork

Hi everyone,

I'm brand new to Stager and have read that it has its limitations with label quality and rendering but still hoping it might work for the current project I have going on. The only problem I'm having right now is the decal I'm importing and applying to a jar (cylinder) is "broken" or choppy in the back of the jar. The front of the jar (which is the front/middle of the design) looks fine but the two ends that wrap around the jar are broken. See example attached. Does anyone have a suggestion on how to fix this? Not sure if it's an issue with the model or artwork but this happens with multiple different art files and I've tried both AI files and PNG. Thanks for any help.