Hi again, This isn't really a bug. When I am carrying a box and the item in the box is on the edge of the box. It will touch me and slow me down. The throwing physics is pretty inaccurate, I can't throw items in the box by just hovering above it. Also I can't pick the box up again. it happens when I played the game for about 15 minutes. I tried re-launched it but didn't work. It will happen again when ever I load the old game save that the glicth happened. I posted on the early reply that the game is lagging while playing at 600p, now I just noticed that there is 720x480 resolution and it got decent 35 FPS. Which is really good.
Thank you :D