I used to machine a lot of acrylic on milling machines (manual and CNC), and learned a trick for getting a transparent finish without any polishing/torch treatment.
(I understand you’re mostly talking about the faceting or line segments produced by the digital pipeline, but you may be interested to try this to improve your overall surface finish.)
We would put a heavy cutting oil (specifically Rocol RTD) on the acrylic before milling (or drilling, reaming, tapping etc) and cut at a reduced speed (e.g. down to 400 rpm for very deep pockets using a 3/8" end mill). I’ve tried with other oils that didn’t work as well. We actually special ordered this stuff from the UK. You can then clean the oil off using wd-40 followed by soap and water. Don’t use an ultrasonic cleaner!