Game runs, yet is completely unplayable

[CuriousHouseElf]

The mouse causes the most problems but the keyboard doesn't work as expected either. It takes sometimes 5 or six times of pressing escape to bring up the menu. And any of the wasd keys make Daniel float in that direction for much longer than he should. The controls all around just weren't performing as expected. If you want to see what it looks like I was streaming it at the time so I have a past broadcast that has it in it. I'll just have to grab the link.

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Here, this is what the problem looks like. It's from the beginning of the video to around 5:30.
http://www.twitch.tv/curioushouseelf/v/17455519