Hmm, Forza Horizon 3 is running pretty bad on my new PC, even in low settings. Dropped the resolution to 1600x900. 30FPS.
Constant video and audio stuttering. Sometimes the FPS drops to 0. Is it possible the game isn't optimized well? V-Sync is turned off in game.
Specs: 3GB GTX 1060. 8GB Ram. Core i5-7400 CPU
It had issues early on but most seem to think its been improved upon... Its a damn pain in the ass though as any update to windows can easily affect Windows 10 games... but in this case your below the minimum for a number of requirements.
Recommended CPU i7 3820 @ 3.6GHz GPU NVIDIA GTX 970 or NVIDIA GTX 1060 AMD R9 290X or AMD RX 480 VRAM 4GB RAM 12GB Hard Drive Type HDD Available Space 55 GB Resolution 1920 x 1080 Windows Version Windows Anniversary Edition 64-bit 14393.101