I think i have the same Problem with running. Started in Hengshan for me when i upgraded the lungs with longer sprinting capabilities. Now option 8 does not work anymore.
Version is 1.622
Besides that everything works fine. And no i don't have any A/V Software running etc.
this problem had been stated atleast half a dozen times now. Take the first option to become immune to gas, but dont take the upgrades. There is no goign back, so you will haev to reload a previous save.