When this happens, does it just say unexpected error and close down?
Or is it the infamous "fatal DirectX error"?

In that specific case, the problem seems to be the use of Nvidia graphic cards. The only way I was able to solve this, was playing the game with DirectX 11 support off, so now it uses DirectX 9. Since then I had no fatal DirectX error anymore.
To do that, you start the game, but before you enter your log in details, you use the config button on the right top. There you can set DirectX 11 support off.
You will need to adapt your graphics a bit in the controls, but it works fine.

Perhaps that fix also helps you? Might be worth a try.

I will switch soon to a new AMD card, they do not have that problem apparently.