When i start the game the main menu has no text,i tried running the game in compatibility mode but nothing worked.Then i found a fix that says to download silentpatch and it fixes it but now the game crashes all the time and livesplit doesnt work.Anybody else has this issue?

I am trying to do the any% speedrun.The only thing i cannot figure out is how to do the pizza boy dupe.What keys do i have to press,do i need to hold the side misson key and then start the replay with the m60 and then let go of the side mission key or is it done in a different way?