60 DEGREE V BIT 100 IN/MIN .03 DEPTH
Looks like your feed rate is too slow = melted plastic which gobs up on the tip and drag/smear the sheet.
lines are not clean, rough and melting around letters
what speed would you recommend ?
This is going to sound Strange But I use bacon Grease on the bit. I spent 25 years in the Auto Trade Show construction, and when routing and drilling Plexi we always used Bacon Grease. Washes off with Fantastic
Or Crisco shortening.
As fast as you can.
I guess I will have to go buy BACON!!!