Help Issue with Rope Consistency!

[josemendez]

Increasing the Substeps make the rope look like a cable, I mean that it didn't fold  I tried also decreasing the fixedtimesteps but nothing has changed!

Using more substeps will make all constraints converge a lot faster. Theoretically, a infinite amount of substeps (continuous time) would yield 100% stiff material: not bendable, not stretchable.

You want it to be easily bendable though (to be able to "fold", in your words), so just increase the max bending/compliance parameters of your bend constraints, or even disable them completely. You will find the per-rope bend parameters in the ObiRope inspector.
http://obi.virtualmethodstudio.com/tutor...aints.html

All this is thoroughly explained in the manual:
http://obi.virtualmethodstudio.com/tutor...gence.html

Think of substeps as your simulation budget: the more substeps, the higher stiffness your constraints can reach. If you have only 1 substep (low budget), you constraints will be soft under all circumstances. Once you give the simulation a bit more budget, you will have to manually impose limits to your constraint stiffness, because they can actually reach very high stiffness now.

These concepts are common to many (if not all) physics engines, so you should really get familiar with them.