Hello, I have started replacing two windows with stucco around them at the exterior side. The windows (no brickmoulds) to be replaced are not original, so 5" of the stucco around them is a newer patch compared to the rest of the walls. This makes removing stucco around the windows easier. Still, my progress with a concrete chisel and a hammer is too slow, a yard an hour or so.

Was wondering if this is my only option at this point?
Thanks in advance, h.

How about a grinder (tool with small circular toothless blade).

This is what we use in on the jobsites

A 4” diamond grinder and a hammer drill that also has chiseling capabilities Harbor freight has cheap ones

10 Amp 3-in-1 1-1/8 in. Variable Speed SDS Rotary Hammer

We grind where we want to create a demarcation line so when we mechanically chisel we don’t disturbed the stucco past that demarcation line