Uninstall reinstall will not be of a big help most of the time if you pass the file verification.
Most of the problem will come from the game interacting with the save file, Epic/Epic store profile, drivers, third party software, and overall the environment it is running on.
After that you have to check what has changed since you restarted your computer.
All that comes into my mind is uninstal all the mods and after the mods uninstall the Public Test Server, once the Public Test Server was uninstaled erase the folder "documents/mygames/SnowRunnerBeta" , once the folder was erased, reinstall the PTS again and don't try to load any previous game from the live version where you have done any progression in Imandra and in Yukon.
Maybe that will help you.
@JTT In my case i'm using and old file from the live version previous to the launch of Yukon where I'm almost starting and since I load that file and made some progresion in Wisconsin the PTS didn't crash again, but if I try to load the most recent of my saves with progresion in Yukon the PTS crashes, so I suspect any file previous to the launch of yukon will work