Half Wave Voltage Doubler Simulation stuck
The most likely culprit I see is the switch who doesn't use negative histeresys, as recommended by the manual. Positive and/or no histeresys makes it switch abruptly between the on/off resistances, while a negative histeresys will allow a smooth transition, thus allowing the solver pass the hops with elegance and dignity.

For the ideal diode you could try adding epsilon=100m revepsilon=50m, they set the quadratic region of the I-V curve's "knee". Also, the dynamic resistances you chose for the diode are quite far one from another (in orders of magnitude), which could pose problems. I think it's more than safe to choose Ron=1m Roff=1Meg.