Their response about this is apparently to blame the player for playing the game too much:
This is in response to the save file bug alot of people are encountering, if your save file surpasses 8MB. It was made by a moderator on the CDPR forums. Literally any looting or crafting increases save file size over time. All saves are a ticking time bomb.
**Not all games are designed for unlimited, endless play.**Not all games are designed for NG++++ etc. CP2077, as of now, seems to have been designed with upper limits in place (likely to avoid issues elsewhere in the engine, just like TW3).
The workaround for now?
Don't do it. Play the game until the end, then start a new game. Don't continue saving and reloading the same character for too long. Don't craft thousands of items at once.
Is that ideal? No. And hopefully it can be worked out in the future. Although...maybe not. No game that CDPR has ever created has ever been designed for ongoing, unlimited play. (NG+ was added into TW3 after its release; it was never intended. It was extremely difficult to get working without major issues, is capped at level 100, still gets wildly weird at higher levels, and there is no NG++. It can only be done once per playthrough.) CDPR designs their games with a finite structure: with a beginning, a middle, and an end. They are not meant to be played on and on like Dark Souls, GTA, or an MMO. They're meant to be restarted from the beginning with a new character and played differently. Love it or loathe it, that's the design.
So, for right now, the best step is not to put the game in this sort of situation. It's the nature of the machine.
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Seplito Nash, Smelling Like the Vault since 1996 Step FOUR! Get Paid!