I've noticed the deeper I advance into the game, the longer it takes for Quicksaves to go through. It started with 1-2 second screen freezes which is fine, but now I'm experiencing ~10 seconds screen freezes per quicksave, which is starting to be more than inconvenient, since a quicksave is supposed to be, well... quick.

 

I fear that near the end of the game it'll be taking 30+ seconds to "quicksave", and 10 seconds is being too bad already.

It doesn't get much worse tbh - I think I topped out around 15 seconds - this is a known bug atm, because certain things that aren't supposed to be persistent end up being persistent (certain chanter trap spells and so forth).  It should be cleaned up in a day or so or whenever the next patch is released. 

There are at least two threads on this already and some causes are already known, use the search before blindly posting a new thread.

 

http://forums.obsidian.net/topic/73986-chanter-rime-and-frost-traps-get-saved-causing-mobileobjectssave-to-grow-out-of-control/

http://forums.obsidian.net/topic/72764-quick-saving-and-loading-times-increased-greatly-after-20-hours/

 

And some of the major causes for this are already known.