hit registration problem/glitch

I recently created a server in the battlefield portal 

and have found that whilst shooting at the enemy it's like there is a forcefield around them that can't be shot through i see sparks when bullets impact the target like when you shoot at a chainmail fence and only 2-3 bullets register out of 10-15 bullets and there is, and increased ping compared to other servers 

this is a massive issue as to try and get player to join the server and it's something I can't fix 

and this has only happened since the most recent update 

dice developers need to look into this and fix this fast