To increase resolution, change draw_resolution_scale_x = 1 and draw_resolution_scale_y = 1 to 2 (for 1440p) or 3 (for 4K) in the main config file. Why Forza Horizon 1 is Still Worth Playing
Xenia allows you to scale the resolution. You can play the game in crisp 2K or 4K resolution, making the 2012 graphics look incredibly modern. forza+horizon+1+pc+repack+download+hot+mediafire
Locate the patch file for Forza Horizon (matching your game's Title ID). To increase resolution