Over the last several months, i’ve noticed that anterior milling times are excessively long, upwards of almost 30 minutes for a standard crown or veneer! Also, noticed strange swirl/overmill issues on the surface where the sprew is placed.. or, the restoration will break off the sprue.. Is there a more ideal sprew position than what the software defaults to?
Anteriors tend to take longer, 20 minutes plus isn’t unusual depending on the size of the restoration. Does sound like the sprue position might be the culprit with that milling issue. I’d have SOS remote in and look at the case, maybe get some photos of the restoration next time it happens.