load_torch_file only wrapped the tensor returned by
safetensors.safe_open()/get_tensor() in a copy when --disable-mmap was
set; the mmap-backed read that produces that tensor had already
happened by then. On Windows that mmap-backed read of large
safetensors files can crash the long-running ComfyUI process with an
access violation (#15424). --disable-mmap now reads tensors with plain
file I/O so no mmap of the file is created at all.
chelsealong