Forza Motorsport 7 PC Stuttering and Freezing

My pc Specs
Windows 10 Pro 64-Bit Version 1803
Gigabyte GA-Z170X-Gaming 7
Intel Core i7-6700K 4x 4,40 GHz Oc
G.Skill Trident Z 32 Gb DDR4 3200 mhz
Nvidia ZOTAC GeForce GTX 1080 Ti AMP Extreme
Samsung M.2 970 EVO 1TB
Asus ROG PG 278 Q 2560x1440 144 Hz