Hello, if it helps somebody, I managed to solve it myself in one step, with settings for the step: 1,   0,01, 1.The first main issue was in proper transferring of data from Geometry to ACP Pre, I had a pink link before, but i have updated model and transferred geometry to geometry in AP Pre, the rest I kept the same and just double checked the settings. I have updated initial conditions and run it weak springs on in 1 step and suddenly got good results. Good luck to all.