@poushag Update QSpice; no tweak is required for running this schematic now.
05/07/2026: Adjusted the voltage-controlled switch’s Newton damping.
@sergio.pesenti I tested both the ADA4610 and ADA4896 with the unmodified AD models, and they both solve the DC solution now. Thank you for sharing your tweak and the detailed circuit diagram; without those, couldn’t have narrowed the root cause down to that voltage-controlled switch. BTW, circuit diagram is impressive, which software it is?