I use a Summa cutter but these are my settings, as I've created my own database of this info:
- Blade Used: 60 degree (in 60 blade holder)
- Knife Offset: .90mm (use a lower setting for a lower degree blade)
- Velocity: 10 ips (inches per second)
This could be a starting point for you and tweak as needed.
What exactly is happening in your cut with this material?
AB