I don't believe there is anything particularly unsafe about the high preset, other than it enabling some more advanced options to provide better visuals, which should be expected by a setting of this name. Provided the driver supports the technologies, no issues should occur, other than perhaps a reduction in performance if the hardware is not up to the task.
This has not been reported here as far as I am aware. The canstic2 model provided by the vanilla resource patch does not require this texture. The enhanced version of this model provided in the EP does, though it also includes this texture. What combination of components resulted in this issue?