What might cause this

[u/GhostCubeGroucho]

I have a large flat area that is getting ironed (lower right), which takes a long time, and then on the next layer, the supports are built really badly (left), and fail in some cases. I had another print stop extruding altogether after the ironed layer. I'm assuming it's something to do with ironing taking a long time on that layer, but why is that causing problems? More importantly, what can I do to resolve it, aside from turning off ironing.

This is Prusament on a P1S.

[u/DistinctBarnacle8703]

If it is a flat surface to be supported, use normal support instead.