Speed consistency

[TheDreock]

I am having an issue with my cars not being able to meet the speed that my parts are providing. They start off great but then when I go back into the game they are complete trash. It's getting to the point I don't even want to play it anymore. Is there a glitch I'm not aware of? Any recommendations helpful 

[EA_Atic]

@TheDreock do you have a video of what isa happening to you? 

/Atic