Stop physics simulated static mesh movement with floor

I found out that this problem only exists because the cubes staying on the attached actors to the ship and if I change them to a component of the ship the problem vanishes. Sadly I haven’t located the code for this problem so I can’t fix the problem directly I just have to use HISM collision instead of the attached actors, If someone will find the code one day I will be really grateful to learn where it is.