Maybe, I should rephrased that. It's the only thing I've heard of that causes CTD's. I never used those buttons myself; and after reading about it in that GWX manual, i never ventured to try.
As for saving submerged and reloading from there, I think I did that once in vanillia (remember I did that in case I missed, which I did, so reloaded... didn't exit the game entirely though, could have made a difference, i guess.) and don't remember anything that serious happening. Think all it did was erase all my plot points and reset the torpedo computer. Don't remember having a CTD problem, or it killing the career can't recall if the sub broke or not; don't think it did. I could test it out again with GWX.... I just never bothered, because GWX takes so long to load up.
I follow a general rule for saving. As in, I don't do it when there are any visible ships nearby. So being submerged while saving isn't really much of a problem when following the rule. And I'll just pause the game, if I have something that needs to be done, when my save rule can't be followed. But I don't use my PC for anything serious. Only use it for entertainment. So, I don't have to worry about any Boss forcing me to do something on *my* time.
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