Need help with Visual Issue and Ai issue

My traffic lights do not work on any of the maps, mod or vanilla. they stay in the same light position no matter how long i stay in the session. My ai also refuses to spawn when i try with the radial menu. only way i can make it “work” is by spawning vehicles myself then using radial menu to “play” traffic. but that comes with the issues that they don’t respawn when you move away from them, no cars are parked, they don’t act like the actual traffic AI basically. Lastly, i can’t play any scenarios, just infinite loading.