Happens to me every day. Even with both the target and myself standing still I have to aim behind them much of the time, usually happens when UrT is pegging out my CPU and I am getting FPS drops.
I have also been seeing a lot of blood coming off of my target as I shoot and then they kill me with 100%.
The knife video, yeah that is every day for me.
I don't understand what is going on with it, but don't feel alone zod.