MC34063 boots Proteus that it can't simulate and throws an error, how to solve the problem?

Question

Electronics

Documentation https://static.chipdip.ru/lib/001/DOC001001025.pdf (page 11)

Answer 1

Well, increase the time step, as the system asks.
why do you petahertz calculations??

Answer 2

Frankly speaking. Proteus is not suitable for modeling analog circuits, to put it mildly. LTSpice calculates this chip normally.