@Alex_Vermeer, I agree.
To get a good picture of your laser spot I put together a paper template and some video instructions you may want to try -LINK
I would defiantly print @KevinHolmes cross test pieces as well. The lower the layer heights are, the more evident the problem should be. If possible take some photos of the printed parts still on the build plate, before washing, then after once they have dried etc.