Like others have said. Breaking it in will lead to a smoother and more consistent gun. That's why polishing the bolt or getting a bwing bolt is so popular bc it has a smoother surface and simulates a fully broken in dm bolt.
As for settings; bump dwell up to 21 and get lpr as low as possible wothout issues. In order to achieve this, first start off by slowly turning the lpr in until you feel a slight change in resistance(while the gun is depressurized). Then air up gun, bolt will shoot foward. Now slowly back out the lpr. You will notice the bolt start to suck back. Once the bolt fully sucks back, you can back out the lpr another 1/4-1/2 turn. This should be the lowest possible lpr setting without any issues.