First of all adequate mastering has to be performed before the transduction operation : it has to follow standards such as low/high frequency cuts and many more.
Phase correction for frequencies below 300Hz turns into mono. As well, inappropriate mid/high frequency control could limit outcome on wax.
Unlike classic acetates records (made with cutting machines), our lab uses a specifically designed workflow that engraves directly on PVC.
As for pressed records the size length and specific frequencies determine the final outcome of the record.

The shorter the amount engraved the better the acoustic performance is.

In order to obtain a better outcome (+6dB) we highly recommend to have less than 8 minutes per size on a 12″ at 33 rpm, 6.5 minutes at 45 rpm.