I bought and installed Arma 2 combined operations through steam. I played the DayZ mod with friends and noticed that my character runs way slower than everyone else. The difference is very significant, I only move about a third as fast as they do when I crawl in prone, crouch walk, walk, run and even climb ladders etc. Other players report that my character looks like he is sliding on ice and taking a couple steps forward and then one back and general being very glitchy looking. After more testing I found that the problem was also present for me on a normal Arma 2: operation arrow head server. I reinstalled Arma 2 and Arma 2: Operation Arrowhead and the DayZ mod and it did not fix it.
The problem is not caused by my internet connection or my computer being slow because I tested it on a server I hosted myself and my computer is plenty powerful to play the game at a good frame rate. It is not caused by my character being injured or carrying a heavy weapon, I tested it with a freshly respawned character.
I would very much like to find a fix for this as soon as possible. It severely effects my play experience along with my teams. In DayZ I can not keep up with my team and slow them down making it take up to 3 times longer to travel between locations. I am probably not going to be able to play with my team now because I hinder there progress so much. Also when attacked by zombies or other players I can't move evasively and don't stand a chance of running away. It makes the overall feel of the game sluggish and tedious.
I can't think of any more ways to fix this problem so I would appreciate it if some of the tech people could try and diagnose exactly what the problem is. I deserve to have it fixed because it makes a game I payed for nearly unplayable.