The organ's keys in the castle courtyard do not work, I can't finish the game because of this.

It seems to be that whenever i move my mouse around the frame rate just drops like crazy, not entirely sure what's the cause of this issue but it makes the games difficult to enjoy, anybody know how to fix this issue? I'd really like to get this fixed if possible, since this is a game my dad had me play 13 years ago so it's one of those childhood nostalgic games for me. ...

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So, I get a message "no 3D-card could be initialisized" or so. It then runs in software mode with 6 fps, which sadly isn't playable. When trying to select glide in the options, the same message pops up again. What can I do? Nglide is installed.

all of the game's controls/keybinds can be changed in the options/customize controls menu, with the exception of right shift (toggle sprint), f6 (quicksave) and f7 (load quicksave). i accidentally bound the "Activate Sword" function to right shift and can no longer sprint. i've since changed it back and restarted the game but can still only play a literal walkthrough. it's entirely possible that the same thing would happen with the quicksave/load keys but i'd rather not test it, as i pretty much rely on th...