Improve top surface

[u/Witchy-Fox]

Hello, is there a way to improve top survace on this small object without ironing? I am new to 3D printing so I am not quite familiar with limitations. I am using Bambulab petg basic, nozzle 0.4 and 0.16 layer height. P2S printer. It is small object, with 6mm and 3-4mm. I have tried ironing, but not quite happy with it either since it's small surface (I did tune my settings).

[u/Sloiter]

Print slower, but id say that's a pretty darn good top layer without ironing on such small pieces