[SP] Excursion Immersion
Use the proper cube floor buttons. That is how I did it.
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This is not possible in that case, because with a cube button you cannot leave the first room! 
I think there is no way to prevent this, unless the button is ONLY for a cube.
What are you worried about? It is more importantly to solve the puzzle without glitches ...it's boring to solve it when I win only with bugs. And speedruns are just for entertainment!
First I play your map in the intended way and later just for the speedrun with the button save glitch.
Don't forget: Portal is a puzzle game, which should make the player confused and happy ...it should claim!
Everybody who can solve it only with glitches and bugs is a noob and have forgotten the sense of Portal! 
Winners don't use glitches.
Just because I had your gameplay criticize, you talk my speedrun down.
-__- ...that's unfair and dumb!
How do you assume that these things got anything to do together? It's just not normal to have cuts within a speedrun, it's something like cheating. I made some speedruns of other games too and I know how hard it sometimes is and that you sometimes may use glitches. But hell, don't cut the video, that ruins everything.
Portal 2 Playlists: videos 1-200 | videos 201-400 | videos 401-600 | videos 601-800 | videos 801-1000 | videos 1001-1200
Just because I had your gameplay criticize, you talk my speedrun down.
-__- ...that's unfair and dumb!
How do you assume that these things got anything to do together? It's just not normal to have cuts within a speedrun, it's something like cheating. I made some speedruns of other games too and I know how hard it sometimes is and that you sometimes may use glitches. But hell, don't cut the video, that ruins everything.
OMG, save the game und load savegame ...record stops at loading! -.-
Sorry, that does not make sense ...you're incorrigible, infant.
I didn't see the purpose of the platform or the button to lower it. I only used the funnel to get to the turret room and to take me to the elevator. However, the map was neatly constructed, so despite the somewhat broken puzzle, I give it 3/5.
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