Bugs in saves and or game

This is a wonderful game, recently I

heard the new update came out so I got the game and loaded my save that is almost 4 years old.i dunno if it's my save but everytime I'm in the home menu or browsing through a car it's laggy and slow(like slow slow) but then when I load a race and drive the lagging stops and the game plays clean.this problem only occurs when in the home screen and garage.please can you fix these bugs 🙏🙏🙏🙏 because this is seriously annoying, please help