Game constantly crashes and lags

After the July 1 update, my game has been constantly lagging causing my game to crash. The game is unplayable. It starts to lag every 30 minutes and then if it’s an hour, it starts to crash if it’s more than an hour, it would crash at some point but still lag PS I don’t use mods or cc. I have most of the DLC‘s, but not the new one. Forgot to mention that I’m an Xbox user and after the game crashes when I restart the game, my data is erased and it takes me back to the tutorials, but sometimes my data is back, but I still have to do the tutorials