Stuttering frequently on highest and lowest settings.

Happened so many times, i am at a point where i am frightened to load up the game, i've been getting mad fps drops down to like 33 fps super laggy in menus like theres so much delay, sometime it happens just browsing menus, sometimes end of races, sometimes when alt and tab out of game and back in. Waiting for next update until i play again, when it crashes it black or grey screens and the full computer reboots itself. 😬

1000w

7900xt 

64gb

7800x3d