Nah, I am still testing it. There are a couple things I want to alter still.
I want to back off on some of the initial nuke placement further, and I want to force Euro and UK to build the tactical nuke plant, so that pushes their nuke stockpiles back a bit. I definitely want both those civs to have big stockpiles by late 50's though. I figure if the U.S. wants to ship nukes over to Europe in the early 50's, that is the best way to handle the nuke situation, and keep it as close to history as possible.
I am up to late 1959 playing just Euro, and still no crashes. Naturally, with alliances off the computer went a little nutty and most of Canada now is in the hands of the Imperialist Americans. Only other battle was between SEATO and WP with WP capturing Rangpur and 3 South Vietnamese cities.
This is a good thing in my opinion, since at least the AI WP and China can't seem to build forces large enough to consider taking on anybody but SEATO.
Humans, well, that could be another matter altogether.