I am using a P1S 0.4mm nozzle with Bambu matt PLA filament. My holes need to “pierce” the first layer and extend all the way through the bottom surface (think watering can sprinkler head) Every time I try to do this the first layer appears to print fine, but when the second layer prints it almost always “fills in” my holes about 50% of the time. I have tried slowing everything down by 50% but it makes no difference (0.75mm is slightly better but I really want 0.5mm). I have only tried PLA because that is all I have. If a better material is the recommended solution please tell me what material I should try. I do have a 0.2mm nozzle that I will try but I haven’t taken the time to switch out nozzles yet. Again if that is the solution, just tell me to stop procrastinating 
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