so nolimits give us the option to put more fiction...

so the nolimits team gave us an option to put more fiction of course would it be a good idea for testing because they are like soft wheels they slow down a bit so is it a good idea to use it for testing coasters...?

This is an option in the pro version. Not really essential for most folks, but it can be useful for professionals in the field looking for the most realistic representation of a ride.

[TTD03]

+1 NightwindElf

Does it work like the friction mode in Newton2?

More or less. If you're looking for that "sooper dooper omgz ultra realistic" recreation of a ride it can be handy, but For the most part, it's a useless feature.

If you used the custom friction and turn it completely off you could have a 40 mile ling jet coaster that could take a few days to complete the layout. I really want to do this and have someone else support it, since it would take me many many years to support.

[TTD03]

what about auto supports?