Convergence issues on "high voltage" circuits (again)

[emilfihlman]

The following circuit experiences convergence issues when toggling the logic levels.

$ 1 0.000005 10.20027730826997 50 5 43 w 288 256 240 256 0 w 288 192 240 192 0 w 240 224 240 256 0 w 176 256 240 256 0 w 176 256 112 256 0 w 288 48 352 48 0 w 624 48 560 48 0 w 624 256 560 256 0 r 624 48 624 256 0 10000 L 112 208 112 176 0 0 false 5 0 w 48 48 -48 48 0 w 48 192 48 48 0 w 48 256 -48 256 0 w 112 256 48 256 0 r 112 208 112 256 0 1000000 w 48 224 48 256 0 f 112 208 48 208 16 1 1 v -176 288 -176 112 0 1 50 325 0 0 0.5 181 -176 112 -80 112 0 3046.8890495599894 120 230 0.01 0.01 d -80 112 -48 80 1 0.35 d -16 112 -48 80 1 0.35 d -48 144 -80 112 1 0.35 d -48 144 -16 112 1 0.35 w -48 80 -48 48 0 w -16 112 16 112 0 w 16 112 16 288 0 w 16 288 -176 288 0 w -48 144 -48 256 0 z 480 256 480 48 1 0.805904783 5.6 g -48 256 -80 256 0 d 480 48 560 48 1 0.35 c 560 48 560 256 2 0.001 5.648243909126344 w 560 256 480 256 0 f 416 112 416 48 25 1 1 r 416 112 416 176 0 100000 w 352 112 416 112 0 f 288 192 416 192 16 1 1 w 416 208 416 256 0 r 176 256 176 208 0 1000000 w 416 256 288 256 0 z 352 112 352 48 1 0.805904783 3.3 z 288 256 288 192 1 0.805904783 5.6 r 288 192 288 48 0 100000 f 176 208 240 208 16 1.5 0.02 w 416 256 480 256 0 w 432 48 480 48 0 w 288 48 48 48 0 L 176 208 176 176 0 0 false 5 0 w 400 48 352 48 0