i have started to get slowdowns before and after the junction/loading point tho that's not when i start the game but maybe an hour or half hour later and it seemed to start after the latest updates from the updater
also theres something about stuck magic and looping sounds to and these 2 seems related, like if you see a stuck magic somewhere with no one in it and hear the sound to the sound will continue forever untill you restart the game
*edit*
also i have started to get odd grafic errors after the game crashes and if i instantly get back in, somtimes it helps to clear the game from ram using say cashemanxp and the running the game again but not always