About every 1000 ish rounds the gun decides not to fire when I tell it to fire. Rising Storm 2: Vietnam has similar issues, might be an engine issue.
The recent tweaks for AI in the beta are great! I love the challenge of the game and the intensity of the combat, it reminds me of Sernix servers. The problem comes when the game matches you into 5 person games on maps intended for more than 5 friendlies. It's near impossible to not get domed at random or quickly end up the last person alive and surrounded by 15 enemies who aim for only the head.
It's a little much.