Have you tried posting in the autodesk support forum? There are guys there that will advise you within minutes of posting usually. I tried both inventor hsm and solidworks hsmworks and will say they felt like different animals all together, Runs much better in inventor imo. Did you not trial solidcam and hsmworks before you bought it? Your problems are most likely down to user error though im afraid to say, Ive seem some stunning turned work created with hsmworks.