What difficulties are you seeing with TorchScript (aka jit)? We are trying to make it as easy to use as possible for models defined in Python with PyTorch, so if you’re having issues please let us know. It appears that PyInstaller includes a Python runtime inside the binary, whereas TorchScript and the C++ frontend both have no dependency on Python and can be run in multithreaded environments with no GIL.
As for TorchScript 35 vs. the C++ frontend 8, that’s a more personal choice as they both rely on libtorch and the difference mostly comes down to how you want to define your model (in Python + TorchScript vs in C++), so it’s hard to say without more information on your use case.