Can anyone give an indication as to the speeds I need to correctly cut 8mm perspex?

Do I go fast and light ie. 5-6m/min with around 4mm DOC. Or is it slow and deep? Not sure about spindle speed. I've read conflicting info that says higher gives a better finish but some go on to say it melts the plastic - guess they're going too slow maybe?

I'll be using a 6mm single flute.