Game keeps crashing all the time now.

Hey there fellow Forza players, I’ve been playing Horizon 4 since the 28th of September now. I decided to support the developers and buy the Ultimate edition, I was really happy with the progress of Forza since Horizon 2 so for once I did indeed treat myself and the developers by buying the Ultimate Edition. When I started playing there was nothing wrong with the game ran smoothly, no crashes, beautiful gameplay I was loving it! Although, recently whenever I start up my game and it loads me into my house it will crash whenever it wants in the menus and if it doesn’t you can be sure it’ll crash when I’m driving around outside after not even getting a mile away from my house. I’m now getting quite angry with this because I really want to play Horizon 4 but I can’t. There’s only been 2 times where I’ve gotten lucky and been able to enjoy the game without it crashing. This only started happening in the past week and there’s been no updates as far as I know. So I haven’t actually got a clue to what’s going on.

Any help would be appreciated.

My PC specifications are:
GPU : Palit GeForce GTX 1080 | CPU : Intel I7 6700k | RAM: Corsair Vengeance LPX (32GB | 4x 8GB) | Motherboard : Gigabyte GA-Z170X Gaming-5 | OS : Win10 (ofc) |