Dear HL2 experts and gurus. Your help is needed again. I ran into a problem on the video, for some reason I always fly down, although I should fly straight into the turret. Please tell me what I'm doing wrong, or for what reason it might not work?
Maybe it's the lineup. You can grab the nade more easily if you stop crouching once you're clipped in the floor, so release the CTRL key and throw the nade while aiming at the white texture on the wall (a little bit to the right of your lineup in the video). Then press the +use key to release the grenade, and once it has exploded, you can shoot the smgnade at that black spot on the floor (or maybe at the upper black spot) and crouch again before saveloading. ALSO, I think you have to lower your FPS to 30 (bind y "reload; fps_max 30") after saveloading the second time.
As Marcos mentioned above, you need to lower your FPS to 30 with that bind. When your FPS is 30 in this specific clip, you will raise a bit upwards with each saveload, and with 300 you go slightly downwards.
PS. You don't have to crouch again once you have clipped inside the floor.
It has recently been discovered that the commonly used speedrun package referred to as the "5135 Unpack" has made changes that grant its users unfair advantages which were never present in any vanilla version of the game.
In light of this discovery, We've released an update which fixes these is