As someone who tuned all of his own cars in forza horizon 4, this game is promising. He just added gearbox tuning, the handling tuning is confusing but once you figure out what everything does, it makes a huge difference, it would be nice to have descriptions that actually tell you what the sliders do and how they effect your car's handling, some of the labels like "Grip Off-set" are unclear, I push it all the way back and my back tires still slide at high speeds all the same. My main complaints would be the lack of aero and suspension tuning depth. I need to be able to increase rear downforce, anti-rollbars, etc. to be able to tune my highspeed handling and make the car more stable. He just changed the handling models, he fixed the fishtailing at low speeds but now the car finds the nearest tree with the slightest steering input while at speed and under throttle, cars don't do this to this extreme, not in 5th gear. The game does lack content, like multiplayer races (instead of just time trials), the other maps are hardly there, besides Le Mans, which has been where I spent most my time. We need better controller support, to tune steering sensitivity and deadzones, and a more linear response curve, and the menu controller support is extremely basic, though I understand why, it's not a priority to write separate logic for controller menu navigation, and it's not a big deal to just switch to my mouse to navigate menus. Also, cars are completely undrivable on keyboard, again, steering sensitivity needs to be an option we can adjust. The far west side of the map has horrible optimization too, my fps almost immediately plummets to a slideshow when I get around the tuning store. It's probably that specific tree model has way too many polygons or something if I had to guess.