Including the latest release 355.82. You can disable Speedstep, C states, raise voltage, disable link power management, set high performance and everything else. Nothing will stop it from hitching. This happened many times before and documented here https://forums.geforce.com/default/topic/797098/geforce-drivers/occasional-stuttering-pause-/1/ Being fixed in 347.25 and reintroduced with the later drivers. If you're stuttering in many games, downclock. 347.25 works with the phantom pain and doesnt stutter or hitch unless its the game steaming its assets, but the witcher 3 plays horrible with 347. If the new drivers are giving you a hard time just downgrade to a version you remembered worked perfectly. I havent tested and monitored all.