Tested it in game, while being on the amphetamine drug and pressing alt it still makes you walk the normal alt walk, not the normal non shift walk, even on amphetamine not using shift still makes you faster than normal speed, that was the normal speed.

Tested it in game, while being on the amphetamine drug and pressing alt it still makes you walk the normal alt walk, not the normal non shift walk, even on amphetamine not using shift still makes you faster than normal speed, that was the normal speed.