Hello, I am trying to make a wool tearing simulation and I couldn't figure out how to freeze the deformations after vellum cloth breaking. I've added a video to show an example. The cloth falls down, I want it to freeze slowly after breaking so it looks more like a wool tear and not a chain.

use Vellum Hair Constraint
strong bend stiffness, (if necessary also increase substeps and/or constraint iterations)
play with plastic deformation to have it remember distorted shape to a degree

Is there no way to freeze the points as soon as they break? Like inside of the vellum solver?

there is, you can set i@stopped to 1 if that's what you want, that's essentially what sleeping is using, not sure that's applicable to your effect thogh
you can also increase drag or do a lot of other things to force it to slow or stop

but from the effect you described I'd go with suggested approach, maybe with a bit of drag on top

Thank you for your help, I think I am just misunderstanding something, because I am completely comfortable working with dop networks but when it comes to vellum, I just can't figure it out I feel like it's still static even though I am inside the vellum solver node and also it doesn't even show any data in the geometry spreadsheet. I guess I shouldn't use the houdini vellum solver tool and just create it from scratch in dops

but the drag modifier really helps, so I guess ill stay with that for now, thanks again.

you should see stuff update when within Vellum Solver SOP, and since the dive target is DOP context you can do a lot there

however there were builds where diving inside any solver just stops updating viewport, so its likely you are on one of those builds

in such cases I usually lock the viewport when in SOPs looking on the output of the solver and then dive inside and do some work, while you can't see the guides, it's still better than no update at all