I don't think so, but you seem to believe that it does for Witcher 3; the OP selected a best solution, but he never confirmed that resolved his issue of if he chose to reinstall from scratch. Is there an exclamation mark for the iGPU in Devices Manager? Did you install and run the Intel Driver Update Utility? That should take care of all Intel drivers than can be updated.
I checked this guide that only mentions AMD and NVidia drivers: http://now.avg.com/the-ultimate-witcher-3-performance-guide/