Similar situation. Started the scenario again and resetting the physics restored the ability to brake.
Route continues to be very unstable. Attempting to reload a save of the S8 run mentioned above, TSW just crashed to desktop with a UE error message (first time sent to Epic but suspect that’s as far as it goes). Have subsequently done runs on other routes which saved and loaded fine. I even tried loading the S8 from a clean boot of the PC and clean run of TSW but the same issue occurred.
Not sure how your system is set up, but I have had no stability issues with this route at all. Framerate and stutters, yes - my machine was coded in cuneiform - but no crash, ever. Are you running mods?
