So last night I found an interesting bug, I updated my Graphics Driver and then restarted my machine - Forza 7 Demo ran great, infact it ran perfectly apart from a bit of lag loading in from the menus and due to my settings being a little borked. I then exited the game, and came back in to it - what do you know? Micro stuttering issues were back. On this, I then restarted my PC and started the game - perfect, buttery smooth again. What is causing this?!
Maybe after exiting the game, some process gets left behind in task manager? i have no clue.