I have reported this on this forum multiple times with no luck. Had to stop playing single player as whatever I did ended up the same. This has nothing to do with crashes, memory and is definitely not unique. The game is littered with bugs, crashes. FunCom needs to reassign some of their resources to fix the game as untested new content just deepens the problem. Played this game since release day on and off (about 2.8 k hours), bought all dlc on release, spent decent amount of money in support of
a company and it has never been on a worse state. It needs to address the issues or there will be no player base to sell season passes to.
Sorry for my rant. My recommendation to you is try online servers, but unless you find a nice private server you will be experiencing multiple issues as well (not as bad as single player, though).