Cool, good to know. Will check this out in a bit then.
So are we sure this is a problem on nvidia's end then when deleting a game file is what solves the problem?
It seems more to do with allocation of workload as setting PhysX to 'CPU' in the NVIDIA control panel achieves the same thing. We're not sure if GPU PhysX is supposed to be a feature in this game (it originally was, but then people seemed to start saying it wasn't), but either way the performance degradation happens when the GPU is set to do the Apex clothing PhysX (the file you're deleting is a library for GPU PhysX).
It may be that GPU PhysX is supposed to be a feature in this game and indeed it is, but for whatever reason there are performance problems with running it on the GPU for Kepler GPUs, in which case that would be an NVIDIA problem.