I would try two passes at lower intensity. This gives the medium you’re cutting time to cool down before a second pass finishes the job. This will also save you from manually cutting. It’s worth creating a small test design with the same detail as the full artwork to play around with to perfect your setting. You may find you can run the same setting twice and literally re-run the job OR run one setting and then a lower setting. Tip: you can actually run this all of this as one job if you duplicate your artwork into another layer in the exact same position and assign the settings respectively—the laser cutter will cut both layers just don’t forget the setup as it’s not visually obvious on the canvas.
To lower the intensity you can play around with either speeding up the cut or reducing the power. I like to think of laser cutting as a game where the longer the laser sits in a spot or the more powerful the intensity the greater the burn. Things like blowing air via air assist helps cool the medium and blow soot away which cause marks. [Someone from Darkly please chime in if I’m incorrect or extra details (always been interested in how these things actually work)]
I know all of this as I have cut a lot of double corrugated cardboard with lasers. Trying to cut through two layers, one usually thicker than the other can light up in tight spots if you try to cut it all in one go with one high intensity burn.