Fluid simulation looking like escaping lice

The animation

So my coffee simulation isn’t really co-operating with me. I have two major issues:

  • First of all: some of it is leaking from the coffee cup. Idk how it is escaping, I have tried different surface thicknesses, looked over normals and resolution on the fluid simulation and particle radius.

  • Secondly, all the smaller particles are looking extremely weird, and are moving like lice over the surface. It is as if it’s not moving like an entity anymore, but rather ass individual particles.

Does anyone have any clue to why this might be? Or a quick fix? I’m looking to be done with this project.