When I went to pick up items, including alchemy materials from plants, the game would pause for a split second. Nothing major, but enough to be severely annoying given enough time. I thought it was something in my inventory causing problems, but after dropping all my items, the lag was still there.
It turns out it was the "Allies for Bruma" quest ( which I haven't yet done anything with ) causing problems. As long as this quest is marked as my Active Quest, there's a lag whenever I pick up items! As soon as I select another quest, everything works fine again. Very strange. Has anyone else had this problem?