P2S PC Filament Printing Issue

Hello, I am new to 3D printing and have some issues with printing PC Filament (Bambu PC Filament) on my P2S. (0.4mm standard nozzle, textured PEI plate, preheating chamber to about 50°C via the heatbed)
The parts I am trying to print are small therefore I had some problems with adhesion on the first layers. That was easily solved by using float layers and a lot of glue.
Now I have encountered the following problem:

It seems like the nozzle is dragging filament over the layer and leaving holes in them.
Is this a problem with under-/overextrusion?

I can provide the .3mf file if needed.

Thanks in advance!