If you're gonna hack anything, throwing on Doom should always be first choice. >:)
You have Gamer PC? You want to play in high resolution? Well, pay for the DLC bruhahahaha.
"Grid Autosport on PC will have a huge, free high res texture DLC"
"huge, free high res texture DLC"
"free high res texture DLC"
Pay for the game, get high res for free. :)