crashing help

ive been playing on playstation 4 for years and havent had many problems. ever since the new update its been crashing so terribly, ive restarted my ps4 and made sure everything is updated and storage is good and whatnot but none of that is helping. i just tried playing a save file ive had for a while and it crashed three times in less than an hour. again ive never had problems until now. any help would be appreciated i have no idea how to fix this.