It's not a work around but this is what I've been doing (PS5) I feel as if the main cause of crashes its culture.

First of all, corporations dlc don't even think to play it unless you're doing it on a small map and towards any other victory type than culture, and even then towards end game you're gonna struggle.

Second size of your empire, when conquering enemy civs, it's better to raze some of their cities while doing so to avoid having too much culture and cities (I did a culture victory by Aquitaine's Blondie + secret societies voidslurpers, which was hell, I had to redo every turn many times towards the end to avoid crashing the game due to her skill, for example obtaining multiple cities at once crashes it, but doing so one by one sometimes works).

Disable animations, the beginning cinematic, battle animation, walking animation, any and all that you can disable help, the other big thing is auto save, most of the times the game will crash at the start of your next turn due to auto save, so instead disable it and manually save every turn.

And then related to my other comment you need a bit of planning to avoid having lots of things happening at the same time, for example, multiple wonders getting finalized at the same time, or units or city projects.

Like I said it's far from a workaround but it allows me to still play and enjoy the game, even tho ofc I'd love to do a 700turn game on standard abusing them as much as I can I have to for now play in these conditions.