Run transient with cmin option but applied to certain sub-circuits only?

Hi,

I run schematic simulations, and see a dirty behavior if I use cmin=10f. So some nets are very sensitive to parasitic caps. Although the circuit is no high-speed circuit at all (so 10fF should not cause a problem).

However, as the circuit is large, it is hard to find the critical nets. One thing that may help is to have cmin only for certain blocks, is this possible?

Bye Stephan