yeah its because of the density of the yellow circles is 1000 and the density of the white ones is 0.1, which acts as a flywheel while still keeping the force of the attraction. I have not yet experimented with cranking the frequency up to the high heavens since i have a pretty bad CPU, so that might be a quick fix.
In case you have any suggestions for other things for me to make or any constructive criticism, please leave them here in the comments section. Thanks.