I hate to say this but the game has huge memory leaks still even after the hotfix for the en/us version AND even after playing with traffic set to 0 if you get caught by the police you can say bye bye to 30+ fps also i noticed the more loads you del;iver succesfully/complete the less fps you get after 2-3 hours and it doesnt matter where you are on map or your video settings min/.max or resolution very sad.
temporary solution i noticed recently thta running the game in windowed mode buys me 30-40 min of gametime @58-78fps on top of those 2-3 hours wher the game preforms @ 58-78 fps drop from the usual 70-80 i get after loading my savegame ( wich lasts 30-35 minutes doesnt matter where located on map ) it drops to 57-80 and it doenst increase no matter what i do it only decreases to 25- the more i play
furthere on i noticed ALSO that after the fps drops to 30 or so whatever video settings i change ( from the ingame menu , not going to main menu ) my game instantly CTD's with no error messages thats a clear sign the game still has serious memory leaks and i cant comprehend as to why after all this time they didnt release an urgent/emergency patch to adress taht issue only...it eludes me