We try to publish at least once per week. Over 150 technical guides have been written, from how to wire stepper motors to how to carve granite with $5. It depends on how powerful your machine is. A combination of focal point and depth of cut are some of the factors that make up engraving precision.
The only downside to a CO2 laser like the xTool P2 is the larger spot size. The xTool P2 has a 0.15×0.2mm spot size, whereas the D1 Pro has 0.08×0.1mm. So, for very intricate projects you may want to use the xTool D1 Pro instead. I found it to be very quick, reliable, extremely powerful, and the XCS software is surprisingly easy to use. I expected to want to go straight back to Lightburn (you can also use Lightburn with the xTool P2 if you prefer), but really enjoyed using XCS.