If you want to play on the Pre Speed Patch category (version 1.02) go to steam library right click and open properties and go the tab "BETAS" write in the accesss code SwaghettiYolonese2018 Now in this tab you will be able to switch between the current version and the 1.02 version. The game will need to do a small patch when you switch

Remember that in the 1.02 when exploiting the steam boost some weather effects will be bugged and the game will act strangely from time to time it's why they patched the game in the first place.