Hatches will freeze the program if they are too dense.
A hatch pattern that looks like it was made of poly line circles or ellipses can be simulated by drawing the circles and ellipses with short straight lines. For a gravel pattern, i used ellipses of three different sizes and made each ellipse using 10 lines. That was done by using a poly line ellipse as a pattern to draw the straight lines. Deleted the poly ellipse, and then copied the straight line version in various sizes and orientations for the hatch. It is still too dense and takes some time to generate if set to any scale value below 3.