Gap between walls of small circles

[DaveR18Qc 0]

Hi guys!

I've been using Cura for years now but recently started having issues with small circles.

Looks like it under-extrudes but that's not the case.

Changing extrusion multiplier doesn't change anything about that issue.

I've got wall and skin overlap set to 100%, but 50% or 25% doesn't change that issue either.

I am using a 0.3mm nozzle with 0.3mm line width.

The gap is present from the first/bottom layer to the last layer, all the way up the part.
Using another slicer corrects that issue but i'd rather use Cura.
Anyone knows how to resolve this ?