Likewise.
I tried a symbolic link to redirect the folder back to my c: drive, which has worked in the past. It didn't work here unfortunately.
My file server is Windows 2016, I also tried turning off UAC in the server registry, which has also fixed file issues for me previously. Again, nothing.
It seems the save path is hardcoded, I think we will have to wait for Larian or run the game under an account which doesn't have a redirected documents (hassle !).
