Node setting is cheating, and if your circuit requires cheating to work
in simulation you will be busted in the real world.
If your results are way off then suspect a startup problem. If slightly off,
suspect a floating or unrealistically high impedance node somewhere that
plays with the accuracy difference between tran and dc.
I used independent current source to bias the the OPAMP ,so there is no startup issue..in transient simulation OPAMP is in linear ,but DC it is saturated..
It could mean that the startup circuit is leaking after the tran has settled, while it is shut off nicely in dc. Just one of the possible cases. Need more information