I've had this problem WAY too many times, anyone else would have stopped playing this game by now but I love it and want it to succeed. I really hope this gets fixed ASAP because I'm not sure how long I'm going to keep playing if this persists.
Bullets seem to go right through players sometimes. They impact the surface that's behind the player but they don't actually connect with the player. Here is an example which just happened 20 minutes ago. The first, second and last shot were direct hits, the second one being a headshot but the bullets seem to pass right through him... I also checked the logs after the entire engagement to see exactly what happened (maybe this is some sort of cheat?) and unsurprisingly, none of those shots registered. It doesn't look like server lag either, I died pretty quickly..