Water simulation falling through cup, but interacting with cube with exact same settings

link to .blend ^
I am making a simulation, where i have a large domain, and an inflow circle spitting water out above a cube and a cup. both the cube and cup have effector type on fluid sim, with collision selected.

the water falls around the cube, but through the cup. the cup is thick and solid and isnt just pure planes. why is this happening?

Hi, try adding the fluid setting again. it works fine my end.


Higher res set to 50:

Nothing is spilling, but 10000000% you have too small domain resolution size, thats why you spill liquid through obstacle.
Each domain cell must be smaller than inner size of obstacle, otherwise you’ll have leaking through obstacle.

Some tip for fluid sim: ALWAYS! set particle size to 1.05 instead of 1


:frowning: ill try running it on my home PC, im on my school laptop rn