Adrian wrote:...Are you sure your tooling is correct and the feed etc are correct?
Adrian asked a pretty important question.
The stepover reduction may not help if your bit is taking too big a bite (pass depth set too deep) or traveling too fast (excessive feed rate for your bit or machine or material).
Please let us know what your Feed, RPM and Pass Depth settings are when you have a chance. Or, post your file and we can take a peek.