Sometimes during playing when the round starts all the players are invisible. I can only see floating vests and guns.
This lasts for the entire round and is usually fixed when the next one start.
But it can also happen on multiple rounds in one match. It also occurs even if I change between graphical settings (low, medium, high..).
You can imagine that playing ranked with bugs like this breaks the game..
Asus VIII Ranger
AMD R9 390
Windows 7 64bit