Can no longer set a key (that works) for Sprint/Run after Patch 2.11

Finally caught up and downloaded Patch 2.1. then 2.11 and now no key I set (in main settings) for 'run/fast swim' will work in game... either the hold or the toggle... whatever key I now set, I can only walk at the basic normal slow speed not run at all in the game now. This is annoying as the walk is so slow.... I tried removing TPP Third Person mod but this makes no difference either.. any idea what might be causing this?
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