This happens randomly, sometimes I can not jump over small fences or character level walls, simply the space bar jump become unresponsive, in other occasions, some knee level fences (concrete ones) are climbed instead of jumped over by my character. As I said before, I know vaulting is related to stamina level but I am sure it was full but the problem remains, I tried experimental before the modification of stamina consuption and it worked perfectly, but after the change it's not working properly. A pitty really. It is vital sometimes not to struggle to jump over a small fence or even a climbable one, and with this problem, if you're being persued by zombies or other players it can cost your life.
- Operating System
- Windows 10
Try to vault some fences or jump upwards near to one that can not be jumped over. And see how your character won't respond.
As freerider3434 has mentioned, does the issue occur on vanilla servers or modded servers only? And have you tried to remove the contents of your C:\Users\*username*\Documents\DayZ folder to see if that has any effect on the issue you are experiencing?