Hello, i'm starting to speedrun HL1 and i am having some problems doing the NPC abuse in the chapter Lambda Core. When i kill all the Alien Grunts i am supposed to shoot the scientist with the Gauss through the door, but when i do that the screen fades and shows the data "subject: Freeman ..." and it loads my last save, which is before the load trigger, i have already tried to shoot him with mouse1 and mouse 2 but it has the same result. Also i have tried to lower my fps to 20 but it does not change. I'm using NGHL.