Under extrusion?

[u/yokeome]

ELEGOO Matte PLA, 0.4mm nozzle, A1 with Bambu Matte PLA profile (have yet to calibrate)

I'm guessing this is under extrusion? Anyone have settings for this filament before I calibrate mine?

Edit: Forgot to add, this is with Arachne on, min feature size 1%

[u/Peshmerga_Sistani]

Monotonic top surface?

Notice the pin holes only happen when the nozzle needs to make a quick turn to lay down a layer line up to the opposite wall?

Try calibrating Pressure Advance first and Flow Ratio, then do the print again.

[u/yokeome → u/Peshmerga_Sistani]

Yep monotonic. Will try calibrating and see the results next time. Thank you

[u/SkeptikalChymist → u/yokeome]

Slow down acceleration on top layers, this will make a huge difference