Hello everyone, I am using Xschem for my analog circuit simulation. I am running the transient analysis with NGSPICE code on xschem and I found that for weak input signals, the circuit output varies for every iteration keeping all the parameters same. My understanding is that it is due to the step size used by NGSPICE. Is there a way to fix the step size for NGSPICE in xschem ? Or is there some other reason behind it which I do not understand and can be fixed easily ?