are the CUDA files required on Render Nodes?

[tyFlow]

Hmm that's strange...never heard of that happening before, nor am I sure what would cause it.

If you're rendering from tyCaches and/or not using the CCCS (which you shouldn't be anyways when rendering...always cache GPU sims out first!)...then those DLLs are not necessary, no. They can be removed without causing any issues.