I had a disc version of Thief 3 but I lost it a while ago, I remember when I used to play on my urrent PC (Quad Core, 6gb ram, radeon 6850) my performance was fine, but when I play the GOG version, in some area the frame rate would drop to 5~10 fps, which is impossible for my rig, and it did not happen back when I still had my disc version. I turned off everything I could think of, but it still happens.

Also, I can't seems to pick lock sometime, when I try to pick a lock, my character would just freeze and do not move, after a while I can move again, and sometimes I get to pick the lock, but most of the time I can't, garret just stands still and do not move into lock picking mode.

So here's some of my problems I encountered, wonder if any of these things happens to you as well? I appreciate some input, thanks in advance!