I don't understand, i recently installed the 2011 version of the game because I used to only have SE version. However, I find that I can't play the game properly because of a lot bugs starting in helgen . For example : I'm clipping through the bridge that you're supposed to push to make it fall faster. Does any bug fixes for this game still exist? If you have one don't hesitate to give me the link in the thread. Thank you for your help!

check if your fps are limited to 60

as failimaily said, the physics becomes a lot more buggy if your fps is above 60, which is why you're required to cap it