Difference between animation and motion analysis

Hey guys,

I am new in this forum . I am currently working on a design and noticed that the output i am getting in animation and motion analysis is very very different. The Motion analysis is so bad it seems broken, and the arts go through each other.  I tried putting in collision detection and then increased the fps of the simulation, without any effect.

Then i tried increasing geometry accuracy , with no result.

There are a very huge number of parts so not sure how to upload the assembly.

Any help will be appreciated

SolidworksSimulation